The lighter Side of the Aquarium

Anyone who has spent much time around That Fish Place knows that one of the things we try to do is to not take ourselves too seriously, and to try and have a little fun with our work. So, in the spirit of having a little fun, here are some stupid fish jokes. (and please, if you have some of your own post them in a comment, and we can expand the list)

What did the trout say when it hit a wall?
Dam!

Why did the whale cross the road?
To get to the other tide.

Why didn’t the lobster share his toys with his friends?
He was too shellfish

Where do shellfish go to borrow money?
To the prawn broker!

What’s the difference between a fish and a piano?
You can’t tuna fish!

Rift Lake Cichlids for Small Aquariums – Breeding Shell-dwelling Cichlids


I’d like to welcome Jose Mendes to That Fish Blog. Jose is our resident Cichlid Pro. In addition to working at TFP for 13 years, he’s been breeding Cichlids for over 14 years and has produced over 200 different species. Check out Jose’s article below on setting up a Nano-cichlid habitat.

10 Gallon Rift Lake Cichlid Habitat

Working at That Fish Place/That Pet Place, I get a lot of questions regarding what type of African cichlids can be kept in small aquariums – particularly 10 gallon aquariums. Here I will try to answer some of the common questions concerning basic requirements and species specifics.

When a customer asks which cichlids are ok for a 10 gallon tank, I tell them to keep shell dwellers. These fish are from Lake Tanganyika and the majority of them only reach an adult size of 2 to 3 inches in length, though some do grow larger.

Let’s start with the tank itself. A regular 10 gallon glass tank is fine. For substrate, I prefer sand like Carib Sea Aragamax which I mix with Carib Sea Tahitian Moon black sand. The reason for choosing Aragamax is that not only does it help maintain the pH level in the aquarium, but it allows the fish to act naturally and bury their shells. My setup at home consists of a small cave in one corner and the remaining area is sand; into which I add 2 snail shells for each fish. For fish up to 2 inches I like shells the size of a quarter. (Medium turbo or apple shells work nicely.)

A 50 watt aquarium heater will be just fine. The temperature should be set between 78 and 80 degrees.

Filtration for this tank should be an outside power filter that turns the tank volume over 8 to 10 times an hour. Under gravel filters should be avoided!

The water chemistry in the lake is very hard with a pH of around 9.2. I’ve found from breeding shell dwellers that a pH of 8.4 or higher and a general hardness of at least 10 dkh is best for them.

Before I detail a few of the species, I’d like to share a few things I’ve learned from keeping and breeding these fish:

Weekly water changes: I’ve always done them and always will. 10% is enough to make a difference in health, vigor, and spawns.

Water conditions in my breeding tanks were all the same and were as follows: pH 8.6, General hardness 15+, and temperature 81 degrees.

For feeding; do not feed worms! Bloodworms, black worms, or tubifex. These will kill African cichlids sooner or later. Appropriate food would be any prepared small cichlid flake. They prefer sinking foods, but not necessarily pellets.

Have patience. Breeding shell dwellers is easy. Start out with a group of 5-6 individuals of one species. Don’t move the shells around and don’t add new fish. The fish will reward you for your diligence.

Now let’s detail some of the species that I would recommend for a 10 gallon aquarium. Once again do not mix more than one species per tank.

Lamprologus kungweensis: Adults reach lengths of 2.5 inches with females being slightly smaller than males. An identifiable trait of this species is the golden/yellow mark above each eye that becomes more apparent as they mature. Sexing is not easy there is not much dimorphism. Besides being smaller, the female is lighter in color and less intensely marked.

Neolamprologus Ocellatus GoldLamprologus ocellatus: A stunning 2 inch fish whose name means “eyespot” due to the distinctive spot, outlined in gold, on the fish’s operculum. In addition to the gill cover, the ocellatus has a gold colored iris, a golden cream colored body and clear fins speckled with blue or gold. Sexing is fairly easy; the male’s dorsal fin is edged in an orange/red band while the female’s is clearly paler and often edged in white. Also, mature females are rounded while males are more oblong in shape. The most distinctive feature of a pair is the size difference. Males are almost ½ inch larger than females and the teeth appear larger and more prominent. One of my favorite shell dwellers on the market is the Golden Ocellatus, which has a golden sheen to the whole body.

Lamprologus ornatipinnis: As the name implies, the appeal of this species lies in its ornate fins which are distinctively marked with a series of striations that vary in color from purple to black. While a mature male may reach a total length of 2 inches, the females are ½ inch smaller. The female is also considerably plumper with a metallic purple sheen developing over the abdomen as she comes into breeding condition.

Lamprologus signatus: Another small but striking shellie, males top off at 2 inches, females slightly smaller. L. signatus are more elongate or torpedo shaped than other Lamprologus species. These display clear sexual dimorphism. The flanks of the males are crossed by dark vertical bands that extend through the dorsal to anal fins. The females are drab with only a slight pink hue to their abdomen.

Neolamprologus boulengeri
Neolamprologus brevis: At less than 2 ¼ inches N. brevis is a shiny beige color with up to nine silvery-white bands. Iridescent pastel blue striations mark the upper jaw, the cheek, and the anterior third of the body. Females are slightly smaller and show fewer extensions of the pectoral fins.

Neolamprologus boulengeri: Attaining a length of 2 ½ inches, N. boulengeri is an attractively marked shell dweller. In addition to the characteristic blotch pattern across the flanks, they have a yellow/orange margin in the dorsal and anal fins. The upper jaw sports a vivid metallic blue moustache which continues as a thin blue iridescent stripe across the operculum and flank.

Neolamprologus Meleagris
Lamprologus meleagris: The so called “lace lamp” or “pearly ocellatus”, L. meleagris is a diminutive silvery/black cichlid that rarely exceeds 2 ½ inches in total length. Its flanks are purplish with a series of irregular pearl like spots that highlight the scales and fins. The throat is silvery with hint of blue; the eye is set off by a bright blue streak behind the orbit. Females are smaller than males and their colors are not as intense, even when breeding.

Neolamprologus multifasciatus: The smallest of the shell dwelling cichlids of Lake Tanganyika. As the name implies, N. multifasciatus has a “many striped” pattern over its body. The edges of the caudal, anal, and dorsal fins are highlighted with bands of yellowish/orange and white. Sexing mature specimens is simple because though the female is marked the same as the male, she is fully grown at under 1 inch, while the male reaches 1 ¼ inch.

Neolamprologus similis: Similar in appearance to N. multifasciatus but with a larger eye and greenish/brown body color and contrasting light green markings. The bands extend further over the forehead of the fish. Adult size is nearly identical to N. multifasciatus as well.

In closing, I would have to say that shellies are the type of cichlid for people who want to keep cichlids but don’t have the room for a larger tank, (especially college students) and their natural breeding behavior is fun to watch. They are a lot of personality packed into a small fish!

Species Profile: Long Horn Cowfish

Welcome back Melissa! Enjoy her profile on the Long Horn Cowfish, or Lactoria cornuta.
Cowfish are very cute curious fish. Who couldn’t love a bright yellow box shaped fish with whitish blue spots and little horns sticking out from its head and behind its caudle fin?? Cowfish are very friendly and have great personalities. They are generally peaceful and get along with other peaceful fish like chromis, anthias, and basslets. They may eat small inverts as well as graze on live rock, and pick at algae from time to time. In captivity, they usually accept brine shrimp, mysis shrimp, krill, as well as other frozen foods. They should be fed small portions several times a day. With frequent feedings water quality must be continual”Long Horn Cowfishly monitored. It is a good idea to only house one cow fish per aquarium since they are aggressive towards their own species. A single cowfish should have at least 100gal since adults can reach a max size of 18”. If cared for properly they can live in an aquarium for many years.
Cowfish, as well as other members in the box fish family, are able to produce an ostracitoxin which is found in the mucous secretions in their skin. However, the cowfish must be alive to to release this toxin. They only appear to excrete the toxin if they are stressed or feel threatened. Cleaner shrimp and fishes that feed on the slime coat of other fish should be avoided as tankmates because they may provoke the cow fish to release its toxin. If the toxin is released in a closed system the water will usually have a milky haze and the fish immediately start gasping. It would only take a matter of minutes to kill the cowfish as well as the rest of its tankmates. Inverts tend to withstand higher concentrations of the toxin than fish and are more likely to survive. If you suspect the toxin is in your tank, add fresh carbon immediately. If carbon is used and replaced regularly you may see little to no effects of the toxin.

Cowfish are a unique and interesting fish. They may not have soft cuddly fur but they are as close as you can get to an underwater puppy dog!

Species Profile: Splendid Dottyback

I would like to welcome back Melissa Leiter, One of our staff Marine Biologists here at That Fish Place. Melissa has a species profile for one of the thousands of fish here in our fish room.

Welcome Melissa,


The Splendid dottyback, Pseudochromis splendens, is a spectacular fish with its bluish gray stripped body and brilliant yellow tail. They tend to be bullies or down right nasty if they are housed with smaller docile fish. They do best if kept with other larger semi-aggressive fish in a large tank, or kept by themselves in a smaller tank. They definitely don’t need “friends” to be happy.

Something cool about dottybacks in general, including the splendid dottyback, is that they are all hermaphrodites meaning theoretically if you add 2 of the same species you should get a male female pair as long as they don’t kill each in the process of deciding dominance. Splendid dottybacks adjust to captive life very well, and in fact, are one of the few marine fish species that have been succesfully raised in captivity. Splendid Dottybacks will accept many foods including mysis shrimp, brine shrimp, formula 1, formula 2, even flakes and pellets. They are far from “picky” eaters.

They may also hunt down and eat those annoying bristle worms and flat worms to keep those populations under control. So if you are looking for a small hard headed fish that has the attitude of an angry trigger from time to time then the splendid dottyback is the fish for you!

~Melissa

Thanks Melissa, Psuedochromis are one of my favorite types of marine fish. They have alot of attitude in a little package, and are alot of fun to keep.

Until next blog,

Dave

Coral Whisperer

Most of you have probably heard of the Horse Whisperer, and some of you are familiar with the dog whisperer as well. How about the Coral Whisperer? While he may never get a movie made about him, or his own cable television show, Mitch Carl of the Henry Doorly Zoo in Omaha Nebraska is being recognized for his ability to successfully raise Elkhorn Corals in captivity. I came across an article posted on the Omaha World Review website dubbing Mitch Carl as “The Coral Whisperer” for his ability to raise corals from wild captured eggs and sperm, where many others have had less success.

As part of an international research project which is studying sexual coral reproduction (SECORE), Carl and the Henry Doorly Zoo were one of many facilities that took part in the ongoing project, and received wild harvested Elkhorn coral eggs and sperm to try and raise in captivity. According to the article, 500,000 embryos were collected and distributed, of those only 1,100 were still alive after 3 months; these were Mitch Carl’s corals. As techniques have improved in subsequent harvests, survival rates have dramatically increased since the initial collection. Last year Carl was able to keep 75% on his embryos alive, other facilities involved in the project were still unable to achieve more than a 50% success rate. This is where the legend of the Coral whisperer comes from.

This project is of significance because of the coral species at the heart of the project. Elkhorn Coral is vital to natural reef systems throughout the world. It is not only one of the skeleton building corals that build foundations of the world reefs. The heavily branching Elkhorn coral provides habitat for many fish and other animals, as well as providing shorelines with a barrier from storm and wave action. Some estimates put destruction of the worlds Elkhorn Coral, mostly from human related activities, as high as 90%, and Elkhorn Coral is now an endangered species.

Most coral farming is done using asexual reproduction or cloning, taking small pieces or “frags” from a parent colony and allowing it to grow. This process is repeated time after time, and results in many copies of the original. Coral Farming using this “fraging” method produces coral that is adapted to captive environments, and thrives in aquarium conditions. This process works well for corals that are intended for aquarium or zoo use; however it is not a good method of reproduction for coral that is for reintroduction to the wild. These corals have been in captivity for many generations, and have adapted for unnatural conditions. Asexual reproduction is slow, and there is also the risk of introducing unwanted elements back into natural habitats.

Researchers hope that a viable sexual reproduction strategy can be reached, this will allow for “wild” corals to be grown in captivity in huge numbers, then be reintroduced back to the reefs where the eggs and sperm were collected. The hope is that these corals can be grown in coastal regions, where the eggs were collected, so that conditions can be matched as closely as possible to where they will be “planted” on the reef. Successful sexual reproduction of corals would also be of great value to the aquarium trade, the more captive raised corals become available, the less impact the hobby will have on natural reefs, as well as potentially lowering cost with the ability to mass produce corals sexually.

I hope you enjoyed this story. You can get more inforation about the SECORE project at www.secore.org

Until next blog

Dave