Devario acrostomus Care Guide
Devario acrostomus is a freshwater danionin from the Mekong basin in Laos, an active mid-water schooling cyprinid.
Compiled by Aquairi from published sources · Published · Updated
Overview
Devario acrostomus is a freshwater cyprinid described by Fang and Kottelat in 1999. According to FishBase and Wikipedia, it is currently known only from the Mekong basin in Laos. It is a small to mid-sized danionin distinguished by a sharply upward-directed, pointed mouth and relatively long rostral barbels.
Taxonomy
- Family: Cyprinidae
- Genus: Devario
- Scientific name: Devario acrostomus
- Described by: Fang & Kottelat, 1999
- Former name: Danio acrostomus
Habitat
FishBase records the species from the Mekong basin in Laos, where it occupies forest stream pools with clear water. Reported conditions range from standing to relatively swift-flowing waters. It is classified as a benthopelagic freshwater fish of tropical climate.
Tank requirements
- Minimum tank volume: 80 L (about 21 gal)
- Temperature: 20-26 °C (68-79 °F)
- pH: 6.5-7.5
- GH: 5-15 °dGH
- School size: 6 or more individuals
- Lifespan: 3-5 years
Diet
FishBase assigns the species a trophic level of about 3.0, indicating a position consistent with small omnivorous feeders. In the aquarium an omnivorous diet of prepared and small live or frozen foods is appropriate, offered around twice daily.
Compatibility
This is a peaceful, diurnal schooling species that occupies the middle water column. It is best kept in a group with comparably active, non-aggressive tankmates and should be housed away from slow or timid fish that cannot match its activity.
Conservation status
IUCN Red List: Data Deficient (assessed 2011), meaning available information is insufficient to evaluate its extinction risk.
Acrostomus Devario (Devario acrostomus) Breeding Guide
Overview
Devario acrostomus is a danioin found in the Nam Leuk river drainage in Laos and adjacent northeastern Thailand, reaching about 75-80 mm standard length. It originates in pristine, well-oxygenated habitats and needs spotless water and moderate flow. No dedicated spawning account exists in the whitelisted sources, so the steps below follow the documented Devario breeding pattern and are flagged as genus-based.
Sexing
Mature females are rounder-bellied, less colourful and a little larger than males. This is the main sexing cue available for the species.
Conditioning
Following the genus approach, condition adults together on varied live and frozen foods in clean water until females fill with roe, then select a pair for spawning.
Breeding Setup
As with other Devario, use a dimly lit spawning tank with a mesh or marble base so eggs fall out of reach of the adults. Keep the water slightly acidic to neutral and soft, matching the species' general parameters (pH 6.0-7.0), with a sponge filter for oxygenation and gentle movement.
Spawning Behavior & Trigger
Devario species are egg-scattering free spawners with no parental care. Species-specific triggers for D. acrostomus are not published; the genus pattern relies on conditioning and warm, soft, clean water.
Egg & Fry Care
Following the genus pattern, remove adults after spawning, anticipate incubation around 24-36 hours, and begin fry on Paramecium before progressing to Artemia nauplii and microworm.