Three-banded catfish
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Three-banded armored catfish ( Corydoras trilineatus ) |
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| Corydoras trilineatus | ||||||||||||
| Cope , 1872 |
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The three-banded armored catfish ( Corydoras trilineatus , syn .: C. episcopi , C. dubius ) is an armored catfish from the genus Corydoras that is often kept in aquariums . It is often traded as the "leopard catfish" and confused with the C. julii and C. leopardus . In most cases, however, the C. julii is spotted and not streaked, while the C. leopardus is the long-snouted counterpart to the C. trilineatus.
The " trilineatus " comes from Latin and means three stripes .
Occurrence
The three-banded armored catfish is native to fast-flowing rivers in the middle reaches of the Amazon, including mainly in Peru : the Río Javari , Río Huytoyacu , Río Yasuní , Río Nanay and Río Ambiacu , in Ecuador : the Río Pastaza , and the Río Ampiyacu and Río Morona .
features
The male of the three-banded catfish grows up to 5 cm and the female up to 6 cm, the achievable age is 5 to 10 years. The silvery-gray animals with black patterns are drawn very variably. Like most armored catfish, the Corydoras trilineatus also lives in smaller schools mainly on the bottom of the water, but as an intestinal breathers it also needs free access to the water surface.
Fin formula : dorsal 1/7, anal 1/7
Aquaristics
If it is kept in an aquarium, it is important that it is kept in a swarm of at least 5 animals and that there are many hiding places in the aquarium. Suitable water values are a temperature of 22 ° C to 27 ° C and a pH value of 6.0 to 7.5. The water hardness should have a KH value of 2 ° to 5 ° and a GH value of 2 ° d to 15 ° d. The aquarium should have at least 60 liters.
nutrition
The three-banded armored catfish is omnivorous and feeds on algae, detritus , small animals and parts of plants. The following fish food is suitable in the aquarium : Live food ( Artemia , mosquito larvae , Daphnia , Tubifex ), frozen food and dry food (tablets, food flakes) and vegetables.
Multiplication
In the wild, the armored catfish perform their typical mating behavior after the rainy season , when the water has warmed up again, because after the rainy season there are a lot of suspended matter and therefore also prey in the water.
The best way to multiply in the aquarium is after one to three days of cooling the water by two to three degrees, replicating the rainy season, and rich feeding, followed by rewarming. It is best to put together breeding groups with a ratio of two males to one female; the animals also mate in larger groups in nature. The animals perform a special mating behavior in which one or more males follow the female and try to position themselves across in front of her and pinch the barbels with the pectoral spines (so-called T-position). The female forms a kind of pocket with her pelvic fins, into which some eggs are released. In this T-position, the eggs are fertilized by the male. After a short rest, the female looks for a place where the eggs are glued. Often this is on panes, under plant leaves or in the plant thicket such as Java moss. This procedure is repeated a few times until the female has laid up to about 100 eggs, which can take several hours. The eggs should be separated from the adult animals for targeted rearing. At 26 to 28 ° C, the larvae need about 4 days to hatch. The larvae are very small and almost transparent. Two to three days after hatching, when the yolk sac has been used up, the larvae can be fed with newly hatched Artemia . The finest flake food can be given later.
literature
- Hans-Georg Evers : Armored catfish. Ulmer Verlag, Stuttgart 1994, ISBN 3-8001-7286-0 .
- Günther Sterba : Freshwater fish. Weltbild Verlag, Augsburg 2002, ISBN 3-89350-991-7 .
Web links
- Three-banded catfish on Fishbase.org (English)
- Three-banded armored catfish in the ornamental fish directory
- Three-banded catfish on www.welse.net
- Three-banded catfish on www.aquarium-guide.de
Individual evidence
- ↑ Günther Sterba: Freshwater fish of the world. Weltbild Verlag, Augsburg 2002, ISBN 3-89350-991-7 .