Fishician®Diet
Carnivore – frozen mysis, brine shrimp, small meaty foods; steady feeder
Aquarium species profile
Assessor Basslet
Assessor macneilli · Indo-Pacific (Great Barrier Reef, Coral Sea)
Minimum tank30 gal
Adult size2.5"
Care levelEasy
TemperamentPeaceful
Temperature72–78°F
pH range8.1–8.4
Compatible tank mates
Peaceful reef fish of all types; one of the best community reef fish
Tank mates to avoid
Aggressive predators, dottybacks, aggressive damsels
Care notes
Electric yellow or blue (depending on species) small basslet. Unique behavior — swims and rests upside-down under ledges. Mouthbrooder — males hold eggs in mouth. Reef-safe, peaceful, hardy, and eats prepared foods readily. Often overlooked but one of the best small reef fish available. Can keep a pair.
Check the whole aquarium. Tank size alone does not establish compatibility. Confirm adult size, water overlap, social grouping, territory, diet, and the individual animals before stocking.