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Synodontis nigriventris - Upside-down catfishMagyarul / Hungarian
Synodontis nigriventris - Upside-down catfishSynodontis nigriventris - Upside-down catfishSynodontis nigriventris - Upside-down catfishSynodontis nigriventris - Upside-down catfish
  • Scientific name: Synodontis nigriventris
  • Common name: Upside-down catfish
  • Group: Catfishes
  • Habitat: Africa, Zaire basin from Kinshasa to Basonga
  • Size: 10 cm
  • Biotope: In the entire central Congo drainage, but the species is not found upstream of the Stanley Falls in the Lualaba.
  • Social behavior: Peaceful, even with own species. Recommended for community tanks.
  • Diet: Omnivorous, insect larvae, flakes.
  • Breeding: Quite hard
  • Tank: Minimum 80 litres
  • Population: 5 fish for 100 litres.
  • Decoration: The tank should be planted with such board-leaved plants as Echinodorusand, decorated with roots and stones for hiding. The fish enjoys browsing the underside of leaves for insect larvae.
  • Temperature: 22-26°C
  • pH: 6-8
  • Hardness: 1-20 NK°
  • Lifespan: 5-10 years

Description: The body is foreshortened and compact. The eye is remarkably large and the snout short. The barbels are long and have a membrane at their base. The adipose fin is medium-sized, the caudal fin forked roughly to its centre. Because Synodontis nigriventris usually swims on its back its coloration is reversed and its belly is dark spotted. The body coloration is otherwise marbled dark and light grey-brown, often with a violet cast. There are small black spots all over the body and fins. There may also be whitish spots arranged in irregular longitudinal bands, especially in front of and behind the adipose fin. Juveniles are more heavily marbled and have more whitish spots. The openings of the secondary lateral line system are visible as small white dots, frequently in vertical rows, especially on the upper half of the body. The older these fishes grow, however, the more solitary they become. As long as they are not upset by particularly boisterous tankmates they are also frequently to be seen by day.

Female has a more rounded body and pale coloring. Synodontis nigriventris is one of the few synodontis sp. to have been bred in an aquarium. The eggs are laid in a depression on the bottom. The females are round-bodied, particularly at spawning and the parents look after the brood. The fry carry the yolk sac to the fourth day and will accept freshly hatched brine shrimp after. From the 7th or 8th week they change to the upside-down swimming position standard for their species and tend to form schools at sizes between one and two inches (2 to 5 cm). They will later lose this habit.

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