- Scientific name: Tetraodon biocellatus
- Synonyms: Chelonodon biocellatus, Chelonodon ocellata, Crayracion fluviatilis ocellata, Tetraodon steindachneri
- Common name: Figure Eight Puffer, Eye Spot Puffer
- Group: Brackish fishes
- Habitat: Asia; Cambodia, Malaysia, Indonesia
- Size: 8 cm
- Biotope: Inhabits in estuaries and coastal waters. Prefers freshwater, but frequently found in brackish water too.
- Social behavior: Intolerant and aggressive, they often attack plants as they go after snails, leaving holes in the leaves. Tetraodon biocellatus should be kept alone, or in a small group in a large tank. Can be kept in a community tank, but with cautions, as they tend to nip the fins of slow-moving or long-finned fish.
- Diet: Carnivorous; They predominantly eat snails, shellfish and prawns, but they can also be fed with other live and frozen foods. Their sharp teeth grow continuously and must be kept ground down with snails and shellfish.
- Breeding: Have not been bred in auqarium
- Tank: Minimum 70 litres
- Population: 1 fish for 100 litres
- Decoration: Needs a bottom of sand with plants along the edges and back. Leave enough room in the centre for swimming. The fish needs hiding places among rocks, roots and branches. The use of floating plants to diffuse the light is also recommended.
- Temperature: 22-26 °C
- pH: 6,5-7,5
- Hardness: 5-12 NK°
- Salinity: 5-10 gramm salt/10 litres
- Lifespan: 15 years
Description: Tetraodon biocellatus has a short rounded body, dark back with greenish yellow patterns, that vary greatly from fish to fish. These markings resemble the number eight, or eye-spots, earning the species its common name. The belly of the fish is white. Puffers have the ability to inflate their stomachs with air or water. The fish becomes 2 or 3 times its normal size, big enough to scare away many potential predators, or difficult to swallow. Figure Eight Puffers have beak-like mouthparts, which are formed by a fusing of 2 teeth from each jaw, where they get therir latin name (Tetraodon). This species is very sensitive ammonia and nitrites, and since they are messy eaters, regular partial water changes are a must.
The identification of sexes is difficult, the female becomes larger and more compressed. There are no reports of aquarium breeding, but in nature it's a substrate spawner and the male exhibits some degree of brood care.
(One spot mouthbrooder)
(Bleeding heart tetra)
(Flame tetra, Red tetra)
(Lesser bleeding heart tetra)
(Black phantom tetra)
(Rummy nose rasbora)
(Clown botia, Clown loach)
(Giant Cory, Barbatus Catfish)
(Midget Catfish, Midget Sucker Catfish)
(African butterfly cichlid)
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(African fern, Congo fern)
(Red-Striped Earth Eater)
(Brichard's slender cichlid)