Family: Eleotridae
Crazy Fish — a Eleotridae from Indo-Pacific estuaries, peaceful but territorial toward its own kind. Reaches 11.2–16.5 cm; a bonded pair claims one cave; keep others elsewhere. 22–28 °C.
Butis butis, a member of the family Eleotridae, comes from Indo-Pacific estuaries, where it inhabits warm freshwater streams and lakes. Peaceful but territorial toward its own kind and small carnivore — live, frozen and fine sinking foods, it grows to 11.2–16.5 cm and adapts well to a properly set-up aquarium in the 22–28 °C range. Other Butis species in our database include Butis koilomatodon.
Intermediate difficulty. Peaceful but territorial toward its own kind; a bonded pair claims one cave; keep others elsewhere.
Set the heater to 22–28 °C and avoid swings. pH 7–8, GH 9–19 dGH suit it.
Adults reach 11.2–16.5 cm; it is middle of the water column. Plan for at least 327 litres.
Small carnivore — live, frozen and fine sinking foods. Feed two small meals a day rather than one large one.
Yes, with care. Peaceful but territorial toward its own kind — pair it with Shrimps in a species setup — A classic pairing for the dedicated and skip Other gobies of the same species without extra caves — Territorial wars over refuges.
Its home waters are Indo-Pacific estuaries — warm freshwater streams and lakes, with still to gentle current.
Not a noted jumper — a standard cover still keeps dust and spray in.
In the aquarium: hidden-clutch spawner with paternal care. Subtle external differences.