Common name: Flag-tail dart-goby

General information

The Blue-lined Dartfish, Ptereleotris uroditaenia, is a small, peaceful fish known for its elongated body and striking coloration. It has a pale body with vivid blue lines running lengthwise, which can make it a visually appealing addition to any reef aquarium. This species is relatively shy and is often found hovering above the substrate or hiding among rockwork.

Care

Blue-lined Dartfish require a well-established aquarium with plenty of hiding places and a tightly fitting lid, as they are known jumpers. They thrive in a peaceful community and can be kept singly or in pairs. It's important to provide a varied diet of small meaty foods, such as mysis shrimp and brine shrimp, to maintain their health and coloration.

Reproduction

In the wild, Blue-lined Dartfish form monogamous pairs and spawn within the safety of their burrows. The eggs are adhesive and will attach to the substrate or rockwork. In the aquarium, breeding is possible but challenging due to the need for pristine water conditions and the difficulty in raising the delicate larvae.

Habitat

Native to the Indo-Pacific region, Ptereleotris uroditaenia is commonly found in lagoons and on outer reef slopes. They prefer areas with sandy substrates and abundant rockwork or coral rubble where they can seek refuge. These fish are typically found at depths ranging from 2 to 30 meters.