Dottybacks
Dottybacks, also known as Pseudochromis, are brightly colored, exceptionally gorgeous but intensely aggressive fish that reach a size of about three inches. Since they are small and very hardy aquarium specimens that adjust well to captivity, there is a temptation for new aquarists to add them as their first "spectacular" fish. This is a mistake. Due to their aggressive nature, especially in a smallish tank, this will often preclude the addition of additional fish later on Despite their relative smallish size, we recommend putting them only in significantly large tanks where their aggression will be dissipated on a variety of fish. They are totally incompatible with fairy or flasher wrasses or other wrasses of a similar size. They have been known to go after fish considerably larger than they are. The least aggressive dottyback is Pseudochromis fridmani.
Dottybacks feed on plankton, small crustaceans, worms and will accept most prepared foods, especially meaty foods. The aquarium should include a well-sealed lid, and plenty of rockwork and hiding places as they tend to be somewhat cryptic. Only one species should be maintained in an aquarium.