Apistogramma agassizii Breeding Guide

How to breed Apistogramma agassizii: a cave/substrate-spawning dwarf cichlid with female brood care, soft acidic water and male-driven courtship.

Overview

Apistogramma agassizii is a substrate-spawning dwarf cichlid from South America that normally lays its eggs in crevices or cavities among the decor. The female is responsible for post-spawning care of the eggs and fry. Spawning is partial, meaning not all individuals spawn at the same time, and a female releases a single batch of oocytes in each breeding season.

Sexing

Males are larger and more colourful and develop more extended fins than females. Body colour and fin length are important during courtship: larger males are more likely to control higher-quality territory. Females are smaller and comparatively plain.

Conditioning

Commercially produced fish are relatively unfussy about water chemistry, but some wild populations may require a pH as low as 3.0 to 4.0 in order to breed. The species tolerates a broad range, recorded around 22 to 29 degrees C and a hardness of 0 to 179 ppm, with breeding studies citing a preference for hardness near 50 to 100 mg/L and a pH around 6.0.

Breeding Setup

Provide small caves or cavities among the decor for the female to use as a spawning site, along with soft, acidic water as indicated above. Because males develop and defend territory, a setup that allows the female her own defensible cave supports the natural cave-spawning pattern.

Spawning Behavior & Trigger

The female deposits her eggs inside a crevice or cavity. Both sexes pass through four phases of gonad maturation (immature, developing, spawning-capable and regressing), and reproduction is asynchronous across a group. Courtship is mediated by male body colour and fin length and by control of quality territory.

Egg & Fry Care

The female tends the eggs and fry after spawning and may become aggressive; in smaller tanks the male may need to be removed to prevent conflict. Specific egg counts, hatch time in days and fry first foods are not detailed in the consulted sources and are therefore omitted.