That Fish Blog – Aquarium Advice and Information

Overfeeding your aquarium is one of the most common mistakes made by aquarium hobbyists, and it isn’t one only made by beginners. It’s easy to go overboard when our fish “always seem hungry” and even appearing excited when they see you coming towards the tank with food in hand.  Healthy fish pretty much always look hungry. It also doesn’t help that we’re directed by packaging instructions to feed amounts that may be inappropriate for the type and number of fish we are keeping. We want the best for our fish and we want to be successful in keeping them, but it’s easy to cross the line from feeding enough to feeding way too much.

Problems Caused by Overfeeding

Leaving uneaten food in the aquarium is never a good idea. Watching food fall to the bottom of the tank, with the thought that your fish to eat later, can lead to big problems. Many fish are kind of programmed to eat food at certain places in the tank. Surface feeders, column feeders and bottom feeders tend to feed within their comfort zones, so you won’t typically see surface feeders travelling to the gravel for a snack, and fish that feed in the water column usually ignore food bits after they settle. No matter what kind of fish food you distribute, pellets, flakes, frozen foods or even live feeders, anything not eaten is left to decay. This unprocessed food, in addition to the waste produced by the food that is actually digested, can quickly create issues with your tank’s water chemistry and/or cause a bloom in the population of naturally occuring scavengers.

Uneaten foods quickly start to decay, adding to ammonia and nitrate levels of the aquarium, and it can very easily result in more bacteria than the nitrogen cycle can handle causing cloudy water. Overfeeding is not only dangerous to the health of your fish, but it causes unnecessary demands on your filtration, often resulting in poor water quality. Fortunately, the problems that arise from overfeeding are quickly and easily reversed or eliminated once you get your feeding habits under control.

Aquarists are also often shocked or full of disbelief when we tell them that the hordes of unsightly little “bugs” or worms creeping up the glass and through the rock and substrate are a probably a result of over-feeding their aquarium. What you see are probably either scavenger nematodes or planaria. Chances are there were a few of these critters in your tank from the start. They can be introduced via fish, plants, wood or other things you add to the aquarium as their microscopic eggs can travel on any of these things. They are generally harmess, but when you overfeed the opportunity arises for their populations to boom with the abundance of decaying matter in the substrate. Reducing the frequency and amount of food will help to bring the population back down to size, but you may also choose to treat the tank with anti-parasitic medications to speed the process along. Read More »

I can remember foraging in ponds and puddles as a kid, especially once it got warm enough in Spring  that the ground was thawed and everything would reappear after a long winter dormancy. How could I not be fascinated by the frogs hidden at the water’s edge and the newts and salamanders I’d find under moist rocks and rotting wood? But what would really grab my curiosity and attention would be the various jelly-like egg masses that would appear along the water’s edge, speckled with black dots and begging to be observed. It was on more than one occasion that my siblings and I gathered a cluster of eggs in a jar to take home for observation. If you have a small spare aquarium and a few other simple pieces of equipment, you can raise amphibian eggs, too, and watch them change from a speck in an egg to a fully developed frog or salamander. Watching tadpoles in aquariums is a great educational project for kids and adults!

If you have a spare 5 or 10 gallon tank lying around or a small garden or patio pond, prepare to be amazed! Start by filling the tank or pond with clean water. Ideally you’ll let the water cure for at least a day or two, particularly if you have chlorinated municipal water, but you can also use a dechlorinator to make the water safe. Your tadpoles absolutely depend on having fresh, clean water for proper health and development. You’ll be bringing a small amount of source water with you from wherever it is you collect your eggs, but chances are you won’t be carrying several 5 gallon buckets of it back with you. Take care to have an environment prepared for your egg cluster before you bring it home.  Don’t put eggs into an occupied aquarium, keep them safe in a separate vessel.  Read More »

Many years ago I established a school of 75 Boezeman’s Australian Rainbowfish (Melanotaenia boesemani) at the Bronx Zoo.  The exhibit, which they shared with mangrove snakes, land crabs and crayfishes, made for a stunning display.  And although the building also housed proboscis monkeys, marsh crocodiles, hornbills and other impressive beasts, the brilliantly-colored Rainbowfishes drew a great deal of attention from visitors.

But many keepers become disappointed when, after a time, their fishes’ fading colors do a disservice to the “rainbow” part of their name.  Based on experience with related species, I’ve always provided my Rainbowfishes with highly varied diets, in which insects were heavily featured.  Those under my care have usually retained their bright colors, and breeding has been consistent.  A recent study that examined the natural diet of wild Rainbowfishes seems to bear this out, and has important implications for the care of other species as well.

Uploaded to Wikipedia Commons by Roan Art

Terrestrial Insects: an Overlooked Food Item

My lifelong observations of captive and free-living fishes have led me to conclude that land-dwelling insects play an important role in the diets of many freshwater fishes.  As anyone with a pool or outdoor pond can imagine, untold numbers find their way into fresh and marine waters each day.  In 2009, the research of National Oceanographic and Atmospheric Administration biologists revealed that terrestrial insects comprise up to 100% of the diets of some US fish species. You can read more about this topic in the articles linked below. Read More »

Choosing the right aquarium salt mix to add to your tank can be can be a confusing process, especially if you’re new to the hobby. But, it isn’t as complicated as it may seem, you just need a little background info to get you on the right path to choosing the salt that is appropriate for your set-up.  

Salt in Freshwater Aquariums

Adding salt to a freshwater aquarium is not a necessity, but it is used by many aquarists as a treatment to add electrolytes to the aquarium water, and as both a stress reducer and a parasite deterrent. Basic Aquarium Salt is not the same as the formulated mixes used to make a brackish or saltwater aquarium. Aquarium Salt is simply Sodium Chloride, and does not contain minerals and trace elements like calcium and iodine like sea water mixes. Adding small portions of this salt can help to treat osmoregulatory stress, an imbalance or disruption in the exchange of salts and minerals between the fish itself and its environment. Stressful situations such as transport, disease, or injury can cause osmoregulatory stress, but if used properly, aquarium salt can increase blood and oxygen flow through the gills, helping the fish relax and heal. When used in higher concentrations for short time periods as a dip or bath, salt can help to build a the protective slime coat on the body, preventing parasites from attaching and even killing one-celled parasites like Protozoa, that may already be on the fish. While aquarium salt does have some benefits, it is not a necessary additive. Once introduced to the tank, salt does not evaporate out of the tank. It can only be removed with water changes and plants, inverts and other sensitive species may be negatively impacted if the concentration is allowed to rise. Read More »

The results are in! We polled aquarium hobbyists like you to find out which style and brand of filter is most popular to maintain a home aquarium. Check out our infographic to see where your favorite filter fits. You can see the full-sized graphic here.

We created a survey a few weeks ago to gather input on what you see as the best aquarium filters are in the hobby today. We received responses to the survey from over 100 aquarists, from beginner level to professional keepers of various sizes and types of aquariums. With the data collected we created a colorful infographic to show you which filters came out on top! Marineland and Fluval Brand filters topped the chart with more than half of the respondents listing these manufacturerers. Canister filters are now the top type of filtration for any aquarium type, with power filters following closely behind.

We’d like to thank all of you who participated in the survey to give us these results. The infographic is also available for use in your own page, just copy and paste the code below:
Choosing the best aquarium filter for your fish tank – An infographic by the team at That Fish Place – That Pet Place.