Apistogramma rubrolineata Breeding Guide

Breeding Apistogramma rubrolineata, a Bolivian blackwater dwarf cichlid bred as a cave spawner in very soft, acidic water per genus biology.

Overview

Apistogramma rubrolineata is a dwarf cichlid known only from its type locality, the Rio Manuripi in Bolivia, where it inhabits a black-water river with loamy banks (FishBase). FishBase records a pH of about 5.9 or higher and lists the species as Data Deficient (assessed 2014). Its name derives from the Latin for red stripes, referring to the seven dark red lines on the body. It is bred following genus biology, as no species-specific spawning account was found in the consulted whitelisted sources.

Sexing

FishBase gives a maximum standard length of 4.0 cm. Detailed dimorphism is not provided for the species; across the genus Apistogramma males are generally larger and more colourful, while breeding females are most frequently yellow with blackish markings (Wikipedia). The species is distinguished by seven dark red lines and a characteristic arc connecting the postorbital stripe and the midlateral band (FishBase).

Conditioning

No species-specific conditioning is documented. The KB record classifies A. rubrolineata as a carnivore fed twice daily; a varied diet supports breeding condition, consistent with the genus' carnivorous habits.

Breeding Setup

Because Apistogramma spawn in crevices and small caves (Wikipedia), enclosed sites should be provided. As a black-water species (FishBase), very soft, acidic water is appropriate; the KB record lists a minimum volume of 80 L with temperatures of 25-29 °C, pH 4.5-6.5 and GH 1-4.

Spawning Behavior & Trigger

Following genus behaviour, the female prepares a cave and deposits eggs which she tends; Apistogramma breed either in polygamous harems or as monogamous pairs (Wikipedia). A species-specific trigger for A. rubrolineata was not documented in the consulted sources.

Egg & Fry Care

In Apistogramma the female is more highly involved in caring for eggs and fry while the male defends the territory (Wikipedia). Fry sex ratio is influenced by water conditions: warmer water produces more males, and in some species lower pH also produces more males (Wikipedia).

Common Challenges

FishBase classifies A. rubrolineata as Data Deficient and notes it is known from a single black-water locality, reflecting limited documentation. The KB record rates breeding difficulty as advanced, consistent with the soft, acidic water the genus requires for eggs to develop.