This article was originally published on Critter Science.

The catshark is the largest family of sharks with around 160 species in 17 genera. Just to confuse you further, catsharks are also known as dogfish. The main difference being that catsharks are oviparous (lay eggs) while dogfish are viviparous (birth live young). Most catsharks are listed as Least Concern […]

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This article was originally published on Critter Science.

The needlefish, aka long tom or garfish, can be found in shallow marine environments, brackish (mildly salty) habitats, and even in freshwater. Needlefish look a lot like freshwater gars, but are only remotely related to true garfish. Even though they face the threats of pollution and overfishing, these fish are […]

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This article was originally published on Critter Science.

Perhaps, the most commonly kept fish species in the aquarium trade is the molly, aka common molly, shortfin molly, or sailfin molly. These hardy and attractive fish can tolerate a wide range of water qualities and can even survive in brackish water (water with a slight salinity “salt content”). Wild […]

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This article was originally published on Critter Science.

The discus, aka pompadour fish, is a genus of cichlid native to the Amazonian river basin in South America. These fish are prized in the aquarium industry due to their behaviors, body shape, and amazing colors and patterns. The discus fish keeping hobby is a multi-million dollar international industry, with […]

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