闪光弓背鲶 · Emerald 'Brochis'

Overview

The metallic-looking Brochis splendens is a sociable armored catfish. Juveniles have mottled markings and a conspicuously enlarged dorsal fin, explaining their occasional sale under high-fin trade names. Their appearance changes enough that juvenile pattern alone is a poor guide to identity.

Distribution & habitat

Its broad Amazon distribution covers Brazil, Peru, Ecuador, and Colombia. Groups gather in smaller tributaries and quiet waters, including backwaters, oxbows, and lakes along river margins.

Aquarium setup

Fine sand is the preferred substrate. Smooth, rounded gravel can also work when kept thoroughly clean. Decoration is flexible, but include sheltered areas that let the group feel secure while retaining room to move.

Diet & feeding

This foraging omnivore accepts sinking prepared foods and small live or frozen prey, including bloodworms and aquatic worms. Feed a varied ration intended specifically for these fish. Leftovers from other inhabitants are an unreliable diet, and the group cannot be expected to clean the aquarium.

Behaviour & compatibility

A peaceful, social species, it should live with at least six to eight of its own kind.

Sexual dimorphism

Mature females tend to grow slightly larger and develop a deeper, fuller body than males.

Breeding

Eggs are deposited near the surface and can be transferred elsewhere for rearing.

Notes

Ten to twelve dorsal-fin rays help separate this fish from similar brochis catfishes. Some geographically distinct populations may eventually receive separate species status, so matching colors or trade labels do not settle identification. Modified intestinal tissue permits air breathing, and occasional trips to gulp at the surface are normal. Rows of bony plates provide the characteristic armored covering.