Cuban Cichlid Breeding Guide

How to breed Nandopsis tetracanthus, a Cuban cichlid that spawns in caves and fiercely guards its eggs and fry.

Overview

Nandopsis tetracanthus, the Cuban cichlid, is an aggressive predator endemic to Cuba (FishBase). It inhabits fast-flowing rivers and lakes, often among plants, and can be found in brackish river mouths. It is a cave-using substrate spawner that fiercely defends its eggs and young. FishBase assesses it as Least Concern (2020).

Sexing

Reliable external sexing is not well documented in the consulted sources. A useful spawning sign is the female's protruding ovipositor (laying tube) when she is ready to deposit eggs (AquaInfo).

Breeding Setup

Provide a burrow in which the pair can lay eggs, such as a large clay pot placed on its side (AquaInfo). FishBase gives a temperature range of 24-30 °C for the species. Because the eggs and young are so fiercely defended, a dedicated breeding tank helps protect both the brood and other fish from the parents' aggression.

Spawning Behavior & Trigger

The pair completely cleans the chosen pot before courtship. When the female is ready, her laying tube protrudes; the male swims in circles around the pot to encourage her to spawn (AquaInfo). The eggs are laid inside the cave-like shelter.

Egg & Fry Care

A spawn produces a maximum of about 600 eggs (FishBase). The eggs and resulting fry are very fiercely defended by the parents, which is why a separate breeding aquarium is recommended (AquaInfo).

Common Challenges

The intense aggression of breeding parents can endanger tank mates and complicate maintenance. Establishing a compatible pair and providing a suitable cave are the main hurdles to a successful spawn.