Blue gudgeon dartfish (Ptereleotris hanae) care guide

Group
Marine fish
Other names
Blue hana goby, Filament dartfish
Family
Microdesmidae (dartfishes and wormfishes)
Origin
Western Pacific (range not checked for this page).
Water
saltwater
Maximum size
13 cm
Temperature
24–27°C
pH
8.1–8.4
Hardness
Salinity SG 1.023–1.026
Minimum tank
115 litres
Care level
intermediate
Temperament
peaceful
Reef safe
yes

Care

Tank: a reef or fish-only aquarium with rockwork and caves for shelter. Tank: an estimated minimum of about 115 litres (our estimate from the adult size and habits, not a figure from the sources), with a secure lid. Water: the sources give no species-specific figures, so the values here are general marine aquarium guidance, not species-specific: 24–27 °C, pH 8.1–8.4 and specific gravity 1.023–1.026. Keep conditions stable with good filtration and regular water changes. Behaviour: Dartfish hover above a burrow or crevice and dart into it when alarmed. They are prone to jumping, so a tight-fitting lid or mesh cover is essential. Identification: A slender pale-blue dartfish up to about 13 cm. Trade: not CITES-listed. This page is based on the Wikipedia list entry only; the species article was not checked, so range and behaviour details should be confirmed before relying on them. Sources: Wikipedia, List of marine aquarium fish species (en.wikipedia.org/wiki/Listofmarineaquariumfishspecies). Checked October 2026.

Diet

No diet details were checked for this species. As general guidance for dartfish, offer small frozen foods such as mysis, brine shrimp and copepods several times a day, fed into the water column.

Breeding

No breeding information was checked for this page. Dartfish are rarely bred in aquaria.

Compatibility and tank mates

Reef safe per the list. Peaceful and easily bullied: keep with other peaceful fish and avoid aggressive damsels.

Last updated 8 October 2026. Community-edited care guide on Aquatic-Auctions.

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