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Dermogenys pusilla

Malayan Halfbeak (Dermogenys pusilla) – Surface-Dwelling Livebearer

Peaceful
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Shoaling fish: kept in a group they feel safer, stay calmer and show their best colour.

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Surface-dwelling Malayan Halfbeak for a mature covered aquarium with floating cover, steady hard water and gentle tank mates.

Community FishDermogenys pusillaFreshwater FishHard Water FishIntermediate CareLivebearerMalayan HalfbeakPeaceful Fish

Product Details

Species
Dermogenys pusilla

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Water Parameters

Maintain these water conditions for optimal health and vibrant colors

Temperature
24–28°C
24°CIdeal28°C
pH Level
7–8
7Ideal8

Malayan Halfbeak (Dermogenys pusilla) is a slim surface-dwelling livebearer for keepers who enjoy unusual behaviour as much as colour. It spends most of its time just under the surface, so a covered aquarium, floating plants and calm feeding areas are more important than heavy bottom decor.

Quick facts

Scientific name Dermogenys pusilla
Adult size 6-7 cm
Minimum aquarium 80 litres or larger
Temperature 24-28 C
pH 7.0-8.0
Temperament Peaceful surface livebearer; males can spar, so space and cover matter
Diet Surface feeder; small floating foods, live or frozen insects, crustaceans and fine prepared foods

Care and setup

Keep this halfbeak in a mature aquarium with steady, slightly alkaline water and a close-fitting lid. It is peaceful with calm community fish, but males may spar with each other, so give the group room and broken sight lines at the surface.

Avoid boisterous fin nippers and very small fry-sized tank mates. Floating plants help the fish feel secure and make feeding easier.

Feeding

Feed from the surface with small floating flakes, micro pellets and live or frozen foods such as daphnia, mosquito larvae and baby brine shrimp. Offer small meals so food is taken before it sinks away from them.

Arrival and guarantee

Livestock orders are packed carefully and sent by licensed live-animal courier. The Live Arrival Guarantee applies when the receiving and acclimation instructions are followed.

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What customers say about ordering from us

  • 4 out of 5Verified buyer

    I have a small group of long finned mountain minnows. So was delighted to be able to order ten of this variety to increase the genetics in my tank . The ones I recieved are healthy but it’s to early to give a verdict on wether they are of a long finned type since they are small currently.

    Gordon Walker · 23 Sept 2026

  • 5 out of 5Verified buyer

    100% success travel and "installation". Pleased with quality of purchase. The Siamese fighter a bit "shy" so have not yet seen him at his best yet but looking good. Happy customer. GG

    George E Garratt · 21 Sept 2026

Reviews of our shop, collected by Judge.me, an independent third-party review collector. Newest first.