Kryptopterus vitreolus
Glass catfish are almost transparent Asian silurids that swim in mid-water and show best in groups of six or more. They are shy and delicate: need stable, clean water, low nitrates, and calm tankmates—no fin nippers. Not a substitute for “hardy” community fillers; sudden parameter swings or rough handling stress them quickly. Carnivorous—feed small meaty foods, not just flake.
Frozen daphnia, brine shrimp, micro pellets; live or frozen foods small enough for narrow mouths.
Frequency: 2× daily
They often miss slow-sinking flake—use varied small frozen foods.
Native Region: Southeast Asia (Thailand—Cardamom region; trade stock often farmed)
Slow streams and flooded forest with tannin-stained water and vegetation.
Gentle flow; tall plants for security; dark substrate to reduce glare; mature filtration.
Activity Level: Moderate
Schooling Size: 6+ recommended
Tight mid-water school when comfortable; fades and hides if bullied or water quality slips.
Difficulty: Difficult
Type: Egg scatterer
Sexual Dimorphism: Females slightly deeper-bodied when mature.
Commercial breeding limited; soft water and fine-leaved plants sometimes reported.
Substrate: Sand
Plant Safe: Yes
Open swimming lane in middle of tank; avoid bright bare tanks.
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