Overview
The Wrestling Halfbeak (Dermogenys pusilla) is a intermediate freshwater species known for its silver, green iridescent coloration. Surface-dwelling. Surface.
Origin & Appearance
Origin: Southeast Asia.
Colors: Silver, Green iridescent.
Body Shape: Fusiform (torpedo/streamlined). Typical adult dimensions: 7.0 x 1.3 x 2.1.
Sexual Dimorphism: Strong; males spar with jaws, slimmer.
Tank & Water Requirements
| Min Tank Size | 20 gallons |
| Temperature | 75–82°F |
| pH Range | 6.5–7.5 |
| Water Hardness (GH) | 5-15 |
| Bioload | low |
| Oxygen Demand | medium |
| Plant Safe | yes |
| Aquarium Position | Surface |
Behavior & Activity
Surface specialist; glides just below the waterline with rigid body; males spar jaw-to-jaw; skittish and prone to jumping
Speed: 50/100Aggression: 4/10diurnalSchooling (6+)
Breeding
Moderate; livebearer
Common Diseases
💊 Jumping injuries💊 bacterial
Expert Notes
Surface-dwelling; males spar