
Giant Chocolate Gourami
Sphaerichthys acrostoma
- Care level
- Intermediate
- Adult size
- 7 cm
- Minimum tank
- 72 litres
- Temperature
- 21–25 °C
Species profile
Ctenops nobilis
Common names: Frail Gourami, Noble Gourami, Indian Paradisefish

A slim, shy fish from the Ganges and Brahmaputra, also called the Noble Gourami, and the only member of its genus. Keep alone or in a small group in 108 litres or more.
A slim, shy fish from the Ganges and Brahmaputra, also called the Noble Gourami, and the only member of its genus. Its reputation for being hard to keep is overstated if it gets cool water and live or frozen foods.
Check the scientific name when buying, as common names vary between sellers and countries.
Males are usually brighter, with more pointed dorsal fins, and females are rounder.
Keep the water calm, with floating plants and tall stems for cover, and leave a little open water at the surface, because gouramis breathe air. A lid keeps the air above the water warm, which protects the labyrinth organ.
A calm, deliberate fish that explores with its long, thread-like pelvic fins and takes breaths of air from the surface.
Can be kept singly or in a small group. Males may squabble, so give them cover if you keep more than one.
Males can be territorial, especially when building a nest.
Usually suits a calm community of fish that are not too boisterous. Avoid fin nippers, which go for its long pelvic fins. It is likely to eat shrimp. Choose its tankmates with care.
Fairly tolerant of different water, if it is clean and stable.
Takes prepared foods readily, along with live and frozen foods.
Feed small amounts, and remove anything left after a few minutes.
A mouthbrooder. The female usually holds the eggs and young fry in her mouth for a few weeks, and releases free-swimming young. Give her cover, and avoid stressing her during this time.
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