CheckMyFishTank

Black Cap Basslet care

Gramma melacara · Saltwater · Intermediate level care

Black Cap Basslet, painted illustration

A purple basslet with a black cap that likes caves.

Smallest tank55 gallons
Adult size4 inches
Temperature74 to 80°F
pH8.1 to 8.4
GroupFine on its own
TemperamentSemi aggressive
SwimsMiddle of the tank
Lives5 to 7 years
Watch for: It can fight with similar looking fish, so keep it away from other basslets and dottybacks.

Feeding

Twice a day. A small pinch they finish in about 2 minutes. Frozen mysis, brine shrimp, marine pellets.

Claims a territory and guards it.

Good tank mates

Fish that pass every check with Black Cap Basslet in a 110 gallon tank: same water, overlapping temperature, nobody gets eaten and no bullies.

Questions

What size tank does a Black Cap Basslet need?

At least 55 gallons. Adults grow to about 4 inches, so plan for the adult size, not the size at the store.

What temperature does a Black Cap Basslet like?

74 to 80 degrees Fahrenheit, with a pH of about 8.1 to 8.4. A steady temperature matters more than hitting one exact number.

How many Black Cap Basslet should I keep together?

One is fine. If you keep more, keep one male, since males fight each other.

What do Black Cap Basslet eat?

Frozen mysis, brine shrimp, marine pellets. Feed twice a day: a small pinch they finish in about 2 minutes.

Sources

Checked against these sources on 2026-11-10. When sources disagree we use the safer number.