Gabon Jewelfish Care Guide

Aphyosemion cyanostictum · Freshwater Fish

Gabon Jewelfish
AI-generated illustration of Gabon Jewelfish
Temperature
68-75°F
pH
6.0-7.0
Adult size
~3″ (7.5 cm)
Suggested tank
10+ gal
Origin
West Africa
Family
Nothobranchiidae

What Gabon Jewelfish look like

Aphyosemion cyanostictum, commonly known as the Gabon Jewelfish, exhibits a small, fusiform body shape, typically reaching a maximum adult size of approximately 2-3 inches (5-7.5 cm). Males are characterized by their striking coloration, featuring vivid blue-green iridescent spots that are prominently scattered across a warm brown-red background, creating a visually stunning contrast. In contrast, females display a more subdued coloration, lacking the vibrant patterns of their male counterparts, which is a classic example of sexual dimorphism in this species. The fish possess a well-developed lateral line system, which aids in their sensory perception within their aquatic environment. Their fins are elongated and delicate, contributing to their agile swimming capabilities, while their dentition is adapted for a carnivorous diet, consisting of small invertebrates and zooplankton. Defensive adaptations are minimal, as their primary strategy involves utilizing their vibrant coloration for camouflage among dense aquatic vegetation rather than physical defenses.

Behavior & temperament

The Gabon Jewelfish is primarily a solitary species, often found in small groups or pairs, particularly during breeding periods. They inhabit the shallow, densely vegetated areas of slow-moving streams and swamps in West Africa, typically dwelling near the surface of the water column. Their breeding behavior is characterized as an egg scatterer, where females deposit eggs among the vegetation, providing some protection from predation. The species exhibits a generally peaceful temperament, although males can display territorial behaviors during the breeding season, particularly when competing for mates or defending their chosen spawning sites.

Diet & feeding

In the wild, the Gabon Jewelfish primarily feeds on small invertebrates and zooplankton, showcasing its carnivorous nature. In captivity, it thrives on a diet rich in high-quality live or frozen foods such as brine shrimp, daphnia, and finely chopped bloodworms to meet its nutritional needs.

Behind the name

Aphyosemion (from Greek 'aphyo' meaning 'to swim' and 'semion' meaning 'sign' or 'mark'); cyanostictum (from Greek 'kyanos' meaning 'blue' and 'stiktos' meaning 'spotted').

Plan your tank

Check the numbers before you buy: tank volume, a stocking plan, cycle progress, water changes, and your ongoing care routine.

Keeping Gabon Jewelfish?

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