YOUR EVERYDAY FIELD GUIDE
Discover the world on the other side of the glass.
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Follow your curiosity.
Fishes / Habitat
Male bettas cannot be kept together under any circumstances; two males in the same tank will fight, often fatally. Female bettas are a different story, and a group of females kept together, known in t
3 min read
Fishes / Habitat
The lambchop rasbora, Trigonostigma espei, is a close relative of the harlequin rasbora and easily confused with it, though its black body patch is smaller, more triangular and does not extend as far
2 min read
Fishes / Habitat
The turquoise rainbowfish carries an even, iridescent blue-green sheen across its body, without the sharp two-tone split of the Boesemani, giving it a more understated, uniform look. Its natural range
2 min read
Fishes / Health
An open, reddened sore on a fish's body is one of the more concerning things a keeper can find, and rightly so, since ulcers are rarely a problem in isolation. Almost every ulcer traces back to a bact
3 min read
Fishes / Habitat
The black skirt tetra, Gymnocorymbus ternetzi, is named for the flowing, skirt-like black anal and dorsal fins that trail behind its silvery grey, black-striped body. It comes from Brazil, Bolivia and
2 min read
Fishes / Health
Vibriosis is one of the most common bacterial diseases in marine and brackish water fish, caused by several species of the genus Vibrio that live naturally in seawater. In small numbers they cause no
2 min read
