Common name: Cherna

General information

The Panamic Sergeant Major, scientifically known as Alphestes afer, is a species of marine fish belonging to the family Serranidae, which includes groupers and sea basses. This species is known for its distinctive coloration, with a series of vertical bars running along its body, and a robust, somewhat compressed body shape typical of groupers.

Care

Alphestes afer is a hardy species that can be a good choice for larger saltwater aquariums. They require ample space to swim and territories to claim, so a spacious tank is essential. They are carnivorous and thrive on a diet of meaty foods such as shrimp, squid, and fish. It is important to maintain high water quality and stable parameters to keep these fish healthy.

Reproduction

In the wild, Alphestes afer exhibits protogynous hermaphroditism, where individuals start life as females and can change to males as they mature. In the aquarium, breeding is rare, but if conditions are optimal, they may spawn. The eggs are pelagic, meaning they float in the water column until hatching.

Habitat

The Panamic Sergeant Major is found in the Eastern Pacific, from the Gulf of California to Peru, including the Galapagos Islands. They inhabit rocky reefs and slopes, often in areas with strong currents, and can be found at depths ranging from shallow waters to about 60 meters.