That Fish Blog – Aquarium Advice and Information

Click here to view the first part of this article: Latin 101: The Aquarium Fish and Invertebrates Scientific Naming Game – Part 1

The next part of the scientific name, the species name, is often the most descriptive and specific part of the name. While a genus can still contain hundreds of organisms, the species name for each of these organisms must be unique. It can describe where the fish comes from (orientalis, americanus, chilensis), a person (axelrodi, scottorum, springeri), a color or coloration (caeruleus, albus, puncatus), or a combination of these. Sometimes you may see “spp.” or “ssp.” listed instead of a species name. These abbreviations denote a subspecies (ssp.) or multiple species (spp.). A subspecies may be a variant of specific species that is different enough from the “standard” species to be distinguished, but not different enough to be considered a completely different species altogether. This abbreviation is used mainly with plants, but it occassionally comes up with fish and invertebrates as well. The multiple species abbreviation is used when more than one species is being referred to. For example, in our store you may see sections of assorted Acropora corals labelled as “Acropora spp.” since it may include Acropora tenius, Acropora formosa, Acropora valida and others. Knowing the species name can help aquarists when referring to fish that are very close in appearance

but are different species (like the Sailfin Tang, Zebrasoma veliferum, and the Desjardin’s Tang, Zebrasoma desjardini) or fish with the same common name (like Amblygobius phalaena and Gobioides broussonette, a saltwater fish and a brackish water fish both known as the “Dragon Goby”).

Common Prefixes and Suffixes

There are some basic prefixes and suffixes that show up in a lot of scientific names, especially in the genus name. Some are more obvious than others, but having a working knowledge of what some of these mean makes remembering the scientific name and connecting it with the fish it describes a lot easier. The prefixes generally fall into the following categories:

Shape/Size – These normally act as suffixes in the genus or species name to describe the size and shape of an organism or the size of an organism:

brachy	short
brevis, brevy	short
grandis	large
macro	big, large
micro	small
platy	flat

Some examples: Brachygobius xanthozona (Bumblebee Goby), Macrodactyla doreensis (Long-tentacle Anemone), Platydoras costatus (Striped Raphael Catfish)

Color: The color descriptive is normally in the species name of an organism. It can be used to describe the organism as a whole or a feature on the organism like a stripe or spots.

aureus	gold	fuscus	dark brown
albus	white	glauc, glauco	grey, bluish-grey
auranti	orange	leucos	white
caeruleus	blue	melano, melas	black, dark
chloros, chloro	green	nigra, niger, nigrum	black
chromis	color, colorful	porphyr, purpur	purple
chryseus, chrys	golden yellow	rubens, ruber	red
cyano	blue-green	viridis	green
erythro	red	xanthos	yellow
flavi, flavus	light yellow

Some examples: Pomacanthus chrysurus (Goldtail Angel), Cirrhilabrus cyanopleura (Bluesided Fairy Wrasse), Amblyglyphidodon aureus (Golden Damsel)

Patterns/Markings: These are typically species descriptives as well and can often be used with color descriptives.

astro, astero	star
fasciata	banded
fimbri, fimbria	edge, border
guttatus	spotted, speckles
lineatus	striped, lined
maculatus	spotted, blotched
notat	marked
ornatus	ornate, fancy
punctata	spotted, spots
striata, stratus	striped
taenia	band, ribbon
variegat	striped, variegated

Some examples: Amblyeleotris guttata (Orange Spot Prawn Goby), Chaetodon unimaculatus (Teardrop Butterfly), Corydoras punctatus (Spotfin Cory)

Parts of the Body: These are hardly ever used alone. They typically follow or are followed by other descriptives to specify a feature of that body part, like a long nose or white stomach.

caudatailodon, odustooth

cephale, cepsheadopsface

cheillippectorchest

dermaskinpinniwing, fin

dorsal, dorsalisbackpod, pedfoot

gasterbellyrhyncho, rhynchusnose, snout

gnath, gnathusjawrostrasnout, beak

nasinoseventralbelly, stomach

Some examples: Opistognathus aurifrons (Yellowhead Jawfish), Centropyge flavicauda (Whitetail Pygmy Angel), Centropyge flavipectoralis (Yellowfin Pygmy Angel)

Numbers: These are usually used to refer to the number of a feature of a fish (spots, stripes, etc.)

mono, unione, single

diplo, di, bitwo, double

tres, tris, trithree, triple

tetra, quadfour

pentafive

hexa, hexsix

heptaseven

octo, octaeight

ennea, nonanine

decaten

polymany

Some examples: Pseudocheilinus hexataenia (Sixline Wrasse), Centropyge bicolor (Bicolor Pygmy Angel), Octopus vulgaris (Common Octopus)

Other Common Descriptors: It is impossible to list all the words and roots you may come across, but here are a few more common roots, prefixes and suffixes that tend to appear in common aquarium organisms.

echino	spiny	ichthys	fish
acanth	spine, thorny	neo	new, recent
crypt	hidden	opsis	appearance
geo	earth	para	near, close to
haplo	simple	phago	eating
hyper	over	pseudo	fake, false
hypo	under	-ensis	originating from

Some examples: Geophagus brasiliensis (Pearlscale Eartheater), Neocirrhitus armatus (Flame Hawkfish), Pseudochromis flavivertex (Sunrise Dottyback), Parachromis dovii (Wolf Cichlid), Tanichthys albonubes (White Cloud Mountain Minnow), Echinoderms (all sea urchins and sea stars, meaning “spiny spined”)

Just for Fun

Now that you know the basics, these names are just for fun. Some have fun meanings, others are puns and some we just like to say. The names listed here are just from the aquatic world – there are countless others from the animal and plant worlds that you can discover on your own. Impress your friends with your new little bits of trivia and mastery of the Latin language…

Abra cadabra
This is actually a clam that has been moved to a new genus, but we all know the scientists who originally named it had a sense of humor. Or he just liked magic.

Bidenichthys beeblebroxi and Fiordichthys slartibartfasti
Both are small triplefin blennies and yes, they are both named after characters in A Hitchhiker’s Guide to the Galaxy.

Bufonaria borisbeckeri
This is actually a species of sea snail. Yes, it is named after the tennis star.

Busycon canaliculatus
The Channeled Whelk. Another one that’s just fun to say.

Callinectes sapidus
Otherwise known as the Blue Crab, the favorite food along the Chesapeake Bay area. The name in Latin actually means “Beautiful swimmer that is tasty”. Obviously, they were seafood fans.

Gammaracanthuskytodermogammarus lorictobaecalensis
This was the longest scientific name on record, but was banned from official use internationally. It was for an amphipod – a microscopic crustacean.

Ittibittium
This genus of snails is, surprisingly enough, smaller than those from the genus Bittium.

Trilobites
Trilobites were a class of crustaceans that went extinct about 250 million years ago but are very popular fossils. There are currently trilobites named after the bands the Sex Pistols (Arcticalymene viciousi, A. rotteni, A. jonesi, A cooki, and A. matlocki), the Rolling Stones (Aegrotocatellus jaggeri and Perirehaedulus richardsi), the Ramones (Mackenziurus johnnyi, M. joeyi, M. deedeei, M. ceejayi) and the Beatles (Avalanchurus lennoni, A. starri, and Struszia mccartneyi). The genus in one of these names, Aegrotocatellus, also literally means “sick puppy”.

Uca pugnax
The common Fiddler Crab. No fun meaning behind it, it just happens to be one of our favorites to say.

Vampyroteuthis infernalis
The scientific name for a species of deep-sea squid. Literally, it means “vampire squid from Hell.” It is harmless to humans, but its appearances makes the name seem fitting.

Thanks Eileen,

Until Next time,

Dave

Please welcome back Eileen with another excellent post.

What do you call the fizzy, carbonated drinks sold in cans and bottles and out of vending machines by companies like Coca-Cola and Pepsi? Soda? Pop? Cola?

What about the athletic shoes made by companies like Nike and Reebok? Sneakers? Trainers? Tennis shoes?

Or, more importantly for aquarists like us, what type of fish was “Dory” in the Disney movie Finding Nemo? If you say Blue Tang, Hippo Tang, Palette Tang, Regal Tang, Flagtail Surgeonfish, or Pacific Blue Surgeonfish, you aren’t wrong.

Just like people from different areas can’t agree on what to call their drinks or shoes, aquarists have lots of different opinions on what to call the fish and invertebrates in our aquariums. These “common names” are just nicknames that we as hobbyists use to identify the animals that we keep. So how do we know that we’re all talking about the same fish when we talk to other hobbyists that might even come from another country or speak another language? Do we pull out a portable DVD player and point to the screen every time?

Enter the Binominal Nomenclature System…the dreaded “scientific names” that we see written in italics in every aquarium guide and identification book we read. No matter what language we speak or what part of the world we are from, every picture of that bright blue fish with the black markings and yellow tail will undoubtedly say the same thing under it….Paracanthus hepatus. Understanding how this system works and how we can use it to our benefit is helpful to every level of aquarist.

A Brief History

This system of classifying and naming every plant and animal discovered started with a family of scientists in the 16th century but didn’t truly begin to gain in popularity and use until a 18th century Swedish botanist by the name of Carolus Linnaeus began to assign a two-part name to every plant, animal or mineral that was discovered. The names were created based on the animals appearance or behavior as they observed it at the time. Even now, some of Linnaeus’s original classifications still stand even though many have been amended as knowledge about the organisms has increased.

One things that hasn’t changed is the Latin Linnaeus used to start his naming system. Latin was already a dead language by the time Linnaeus started using it. No one spoke it in everyday life and only those who were educated in universities had a working knowledge of it. This unpopularity and relative uselessness of the language was what actually made it perfect for scientific use. Using a language that wasn’t used every day means that it won’t change a whole lot. Think back to any classic English works that you might remember like Shakespeare and then think back to a magazine or newspaper that you read last week (or like this blog you’re reading right now, for that matter). Do they sound the same? Language changes and evolves through time but using a language that essentially hasn’t been used since the time of Caesar and the gladiators means that it isn’t going to go through a whole lot more evolving. Latin is also not a national language of any country around the world, then or now, so it is more likely to be accepted by everyone while if the naming system was based on a specific country’s national language, any countries who aren’t too fond of that nation aren’t as likely to use and accept it.

How It Works

Every creature on Earth is classified into one of 3 Kingdoms – Bacteria, Archaea, and Eukarya (this last Kingdom was adopted in the 1990s to combine four other Kingdoms -Animalia, Plantae, Fungi, and Protista). From there, the classifications are broken down further into a Phylum, Class, Order, Family, Genus and Species. Aquarists and hobbyists primarily use the last of these ranks – Family, Genus, and Species – so that is what we’ll focus on here.

The Family is one of the first ranks where it usually becomes obvious that all the fish in the group are all related. In some of the higher ranks, the similarities may be so vague that it might be hard to tell how two things are related just by looking at them. A Family (usually ending in -ae, by the way) would include all of the fish we commonly know as Tangs or Surgeonfish, for example, although we can still see that a Yellow Tang (Zebrasoma flavescens) is visibly different in body shape from a Hippo Tang (Paracanthurus hepatus). We can tell that if we have a fish with a scalpel-like spine at the base of its tail, a generally teardrop-shaped body, a mouth designed for algae grazing and a flattened body is probably in the Family Acanthuridae with other tangs and Surgeonfish, even if we don’t know yet if it is in the genus Zebrasoma, Acanthurus, Paracanthurus, or Naso.

After the Family, the genus (“genera” in the plural form) is the next level of classification and where we start getting very specific about the identification of an organism as it applied to the aquarium hobby. The genus is the first part of the two-word scientific name. In Rhinecanthus aculeauts, most commonly known as the Picasso Triggerfish, “Rhinecanthus” is the name of the genus which also includes the Bursa Trigger, Huma Huma Trigger, and Rectangle Trigger. At this level, we still can’t point to a fish and know exactly what it is from the genus it is in, but aquarists can typically make some important generalizations about a fish by becoming familiar with the genera commonly available in the aquarium trade. By looking at the genus of a triggerfish, we can usually tell if it is probably going to be a super-aggressive powerhouse (Balistes, Balistoides, Rhinecanthus) or if it will be a more docile, Reef-safe addition (Xanthichthys, Melichthys, Odonus). Genera can lead to some confusion however; as our knowledge of organisms grows, the genus classification is the most likely level to change. This is especially seen in African cichlids. Genera are being added and modified regularly as fish that were once thought of as color variations of the same fish are being classified as new species altogether.

Check back on Wednesday for the conclusion of Eileen’s article.

Over the past few weeks, we’ve gotten a lot of new and exciting livestock in our fish room for both freshwater and saltwater aquariums. These are some of our favorites, but hurry in because they aren’t likely to be here for long!

Lots of colorful adult peacock cichlids:
In addition to our smaller, juvenile African cichlids, we’ve gotten in a lot of colorful adult male peacocks over the past couple of weeks. These cichlids range from three to six inches in size and have the bright, mature color prized by collectors. Some of the species we have right now are:
Aulonocara rubescens, both the “Ruby Red Peacock” and the “Albino Ruby Red Peacock”
Aulonocara hyassae “Red Shoulder Blue Peacock”
Aulonocara steveni “Albino Taiwan Reef”
Aulonocara maulana “Bicolor Peacock”
Aulonocara jacobfreibergi, both the “Lemon Jake” and Lwanda” variants
Copidachromis mloto “Ivory Head Mloto”
Sciaenochromis ahli “Electric Blue Ahli”

Friendly fish for small marine aquariums

Two fairly uncommon, peaceful blenny species are back in stock – the Segmented Blenny (Salarias segmentatus) and the Lined Blenny (Ecsenius lineatus). Both are adorable small species that are perfect for smaller aquariums that might be too small for another algae-eating blenny like the Lawnmower or Starry Blennies.
The even smaller Panda Goby (Paragobius lacunicolus) is ideal for tiny nano-reef aquariums. These tiny gobies have a maximum size of only one inch and have white bodies with black fins and an orange head. They aren’t available often so when they’re gone, they might not be back for several months.
Another small goby, the Tangoroa Shrimpgoby (Ctenogoboips tangaroai), is a good partner for small pistol shrimp or on their own in community aquariums. They have generally white bodies with a long dorsal ray and can be found building a burrow or scooting along the bottom of the aquarium.

Rare and unusual saltwater fish:
Hybrid Lemonpeel Pygmy Angel (Centropyge flavissimus var.) – a first for TFP! We only have one of these pygmy angels in stock, but it is a new favorite worth mentioning. While most of its coloration is typically of the Lemonpeel Pygmy Angel, this particular fish has a black tail and black trim around the back of its body, making us think it hybridized with an Eiblii or Half Black Pygmy Angel at some point. Very unique!
Mystery Wrasse (Pseudocheilinus ocellatus) – This rare little wrasse has been here for a few weeks now and is making himself at home! The Mystery Wrasse has a gorgeous blue and green coloration and is safe for most reef tanks. The one we have is super active and definitely has put aside the secretive “mystery” part of his common name!
Helfrichi Firefish (Nemateleostris helfrichi) – This little dartfish is on on the wish list of most of our Fish Room staff. It has a beautiful coloration, a peaceful nature and small adult size, and isn’t a picky eater. These fish never stay in our Fish Room long when we are able to get them and we don’t expect to be able to keep the one we have left for very long.

Acro, Acro Acro!
It’s been a good week for SPS lovers! A few new coral shipments have left us with some gorgeous Acropora’s – ultra colorful, unique formations, dense colonies, even a large Table Top Acropora.

Keep in mind, patrons of our Lancaster, PA retail store have first dibs on the livestock listed here. If you are interested in a species, I would recommend giving the livestock department a call ASAP at 1-877-367-4377. Even if we’re no longer in stock, most times we can special order what you’re looking for.

Thanks,

Eileen

Welcome back Brandon Moyer for Wednesday’s post.

Many aquarists are familiar with varying forms of symbiosis.  The most popular example I can give is that of the clownfish hosting in an anemone, providing the anemone with food and in return receiving protection from predators.  There are several different types of symbiosis, but both parties do not always benefit from these close relationships.

You may not be familiar with one creature that forms a symbiotic relationship with humans.  This relationship is considered parasitism, and we receive the poor end of the deal.  The species is called Vandellia cirrhosa, or candiru.  These fish live in the Amazon River basin, grow to about three inches in length, and prey on other species of fish.  They can detect the waste excreted by other fishes gills and follow the trail to find their prey.  Rather than eating the fish, they use barbs on their gill covers, or opercula, to wedge themselves under the opercula of their victim.  They then bite into an artery in the gills and drink the fishes blood.  They can completely gorge themselves with blood in as little as thirty seconds!

What makes the candiru even more horrifying is that their ability to detect waste from other fish also allows them to detect human waste, more specifically urine.  They have been known to follow the trail of urine of those who relieve themselves in the water and actually swim up the victims urethra!  If that doesn’t make you cringe, once in the urethra they are unable to turn around, and because of their spines they cannot back themselves out.  They eventually die in the urethra while the victim experiences swelling and obviously extreme pain.  The only way to remove the fish is through surgery. 

I hope you have enjoyed my first article on symbiosis.  Make sure to wear a bathing suit if you are ever swimming in South America.  Look for another blog on pistol shrimp and goby mutualism and pearlfish and sea cucumber parasitism.

Welcome back Melissa Leiter for another awesome post.

Bacterial infections are very common among goldfish (Carassius auratus) and koi (Cyprinus carpi). The two most common types of bacteria that cause problems in ponds are aeromonas and pseudomonas. Both are naturally occurring in ponds and lakes. They are not found in tap water since chlorine is added at treatment plants.   Likewise  when a new pond is filled using tap water this bacteria is not present.  Once fish are added the bacteria arrive with them.  The bacteria floating in the water does not usually affect healthy fish since they have a slime coat that protects them.  However, if the water quality becomes toxic, the fish lose that protective slime coat and are very prone to infections.  Aeromonas are more common then pseudomonas but both are responsible for numerous fish deaths.  They both present themselves in the form of ulcers, external and internal hemorrhages, red streaking in fins, fin and tail rot and mouth rot.  If left untreated most if not all the fish in the pond will eventually succumb to this infection.

Bacterial infections are treatable if caught early.  When sores are first observed the water quality should be one of the first things to be tested since many bacterial infections are caused by poor water quality.  Ammonia, nitrite, nitrate, and pH should be tested.  If you do not have access to test kits many pet stores, such as That Fish Place, will be happy to test your water for free.  If the ammonia or nitrite are high they need to be corrected before any medications can safely be added.  Ammonia and nitrite are both very toxic to fish.  Ammonia irritates gill tissue and eventually invades other internal tissue and organs causing them to shut down.  High levels of nitrite readily oxidize with hemoglobin to form methemoglobin.  Methemoglobin hinders oxygen transport through the blood causing the fish to sufficate.  Microbe-lift is a good product to add live bacteria that will break down the ammonia and nitrite to make it less toxic to your fish.  Pond salt will also help if nitrite is high since the chloride ion competes with the nitrite ion on the gills.  As long as the chloride ion is at least 3 times but not more than 6 times the concentration of nitrite, the concentration of nitrite becomes reduced and the fish is able to retain oxygen.

If all the levels are in the acceptable range then medications may be used.  There are hundreds of medications out there so choosing the right one may be difficult.  Some medications that we have had success using in the store would be fungus eliminator, melafix, neoplex, kanaplex, sulfathiazole, and biospheres antibacterial.  Fungus eliminator and melafix are more economical then the others if you are treating a large pond.  Neoplex, kanaplex, sulfathidazole, and biospheres antibacterial are more acceptable to use in a hospital tank.  Iodine dabbed directly on the open sore then coated with petroleum jelly to seal the wound can also be done but this should not be attempted by the beginner.  Handling the fish can be very stressful and cause injury if care is not taken.

Ultimately prevention is the key.  With that being said here are some simple things that can be done to protect your fish from contracting a severe bacterial infection; monitor water quality weekly, preform mothly 20 percent water changes, quarantine any new fish for a minimum of 4 weeks before introducing into the pond, feed a high quality staple food as well as fresh veggies like romain lettuce, zuchinni, and cucumbers, and avoid over crowding.