A unique fact about Trunkfish: they secrete a poisonous material from their skin which acts as a chemical defense mechanism against predators.

Lionfish are a species of fish belonging to the scorpionfish family. They are known for their bright colorations, flowing fins and venomous tentacles.

Harlequin tuskfish are a colorful species of wrasse. They are characterized by their sharp blue, tusk-like teeth and distinctive body colorations.

Saltwater Goatfish are members of the family Mullidae. These fish have the ability to change color quickly to blend in with their surroundings.

Squirrelfish are a family of ray-finned saltwater fish. They are characterized by their large eyes and long, sharp dorsal spines.

Snappers are generally non-aggressive fish that do well in very large saltwater community tanks. Most live in rocky or coral reefs, and come in many colors.

Dragonets are a family of small, vibrantly colored saltwater fish. There are over 130 species of dragonets identified and similar in appearance to gobies.

Hogfish are a reef-dwelling species of wrasse popular in the modern aquarium trade. They possess a long, pig-like snout they use to search for food.

Pencilfish are named for their slender, pencil-like shape and they generally grow no more than 2 inches long. They are peaceful by nature.

Rainbowfish are a family of small freshwater fish that get their name from their iridescent colorations that change shades in different light settings.

Freshwater sharks are a group of freshwater fish belonging to the minnow family. Freshwater sharks have long, powerful bodies and large dorsal fins,

There are several species of fish that carry the ""drum"" name. With more than 250 species, drum fish exhibit a wide range of colors and patterns.

Puffer fish are a curious species of brackish water fish. They are characterized by their almost box shaped bodies and somewhat comical swimming movements.

Mbuna cichlids are some of the most brightly colored freshwater fishes in the world, exhibiting a wide range of colors and patterns.

Triggerfish are a fish comprised of roughly 40 distinct species. They are characterized by their laterally compressed bodies and comparatively large heads.

Rays are a large group of fish closely related to sharks. Ray fish are characterized by their flat bodies and a tough, elastic skeleton made of cartilage.

The flounder is also known as a flatfish; a fitting name because its body is laterally compressed and it lays on its side, burrowing into the substrate.

Piranha are a family of extremely aggressive freshwater fish. They are characterized by two rows of extremely sharp, triangular shaped teeth.

Hawkfish are species of saltwater fish closely related to the lionfish. They are characterized by their large heads and somewhat elongated, thick bodies.

Pipefish are a species of saltwater fish related to seahorses. However, the pipefish''s body, unlike the seahorse''s, is long, straight and snake-like.

Eels are one of the more fascinating species of fish in the aquarium trade. They are characterized by their long bodies and snake-like heads.

Snakeheads are a species of tropical fish popular among experienced aquarists. They get their name from their flattened shape and the scales on their head.

Knifefish are a fascinating species of freshwater fish belonging to the eel family. They are characterized by their long, tapered bodies and anal fins.

Also known as argus fish and spotted scats, scats are one of the most popular species of brackish water aquarium fish. They have square shaped bodies.

The Tigerfish is a type of freshwater fish belonging to the genus Datnioides (Datnoids). It''s named for the vertical stripes that run all along its body.

There are nine species of Asian cichlids which can be found in Lebanon, Israel, Syria, Iran, India, and Sri Lanka. These cichlids are mouth brooders.

Koi are one of the most popular types of pond fish. Their bodies, which are long and powerful, are very similar to that of the wild carp.

Archerfish are one of the most fascinating species of brackish water aquarium fish. They get their names from shooting insects with powerful jets of water.

Characterized by their long bodies and similarly elongated jaws, gar are kept in large aquariums and require very specialized care by experienced aquarists.

Flagfish are a small fish that are semi-aggressive in nature. These fish may not do well if multiple males of the same species are kept together.