Hoplarchus psittacus Breeding Guide

Breeding the true parrot cichlid Hoplarchus psittacus, a large blackwater substrate spawner seldom bred in captivity.

Overview

Hoplarchus psittacus, the true parrot cichlid (not to be confused with hybrid blood parrots), is endemic to blackwater rivers of Brazil, Colombia and Venezuela, including the Rio Negro, Jamari, Preto da Eva and Urubu rivers and the upper Orinoco drainage. FishBase reports a maximum length of about 32 cm TL, with another reference noting up to 35 cm. It is a large substrate-spawning cichlid that is seldom bred in captivity.

Conditioning

This species feeds on aquatic insects and crustaceans during high water and on fishes during low-water seasons, so a varied diet helps bring potential pairs into condition. Soft, acidic blackwater that mirrors its habitat is the foundation for any spawning attempt.

Breeding Setup

Provide a large tank with very soft, acidic water and flat surfaces for egg deposition. FishBase lists a pH range of 5.5-6.0, dH of 5-10 and a temperature range of 27-30 C for the species, consistent with its blackwater origin.

Spawning Behavior & Trigger

As a substrate spawner, the species lays adhesive eggs on a cleaned hard surface. Successful captive spawning has been achieved by only a few aquarists, indicating that reliably triggering reproduction is difficult.

Common Challenges

The combination of large adult size, demanding soft-water chemistry and the species' reputation as challenging to spawn means breeding is realistic only for experienced keepers with large, well-managed blackwater systems. Detailed brood-care data is not well documented in the consulted sources.