Aquarium fish: Corydoras haraldschultzi (Corydoras haraldschultzi)
Size: 7.5 – 8.5 cm
Origin: South America
Water temperature: 24-28 ° C
Aquarium volume: 54 l
Corydoras haraldschultzi (Corydoras haraldschultzi ) – interestingly colored aquarium fish from the cuirassid family.
South America. Endemic species. It occurs only in the Guapore River in northeastern Bolivia and western Brazil. It lives in small watercourses, streams and flooded forest areas.
Characteristics and disposition
Reaches approx. 8 cm in length. A characteristic spotted pattern is visible on the body. It has dark spots on a light background on its head, which transform into light horizontal stripes on the body and fins. The head, abdomen, and fins may be variously golden or orange in color.
The rays of the pectoral fins are clearly golden. Gender of young fish is difficult to distinguish . Adult females are noticeably larger and wider, especially when viewed from above. Males are smaller and more slender. The Magnificent Kirysk can easily be confused with Kirysk Sterby ( Corydoras Sterbai ).
These two similar species are distinguished primarily by the pattern on the head. The Sterby cuirass has light spots on a dark background, and a slightly shorter and more rounded face. Magnificent Kiryski are very calm shoal of fish. They should stay in a larger group in the aquarium, which will make them more daring and active. It is recommended to keep min.
6 pcs Instead of scales, Kiryski have a kind of armor. The sides of the body are protected by two rows of bone plates. The first rays of the pectoral and dorsal fins play a deterrent role. They are very sharp and can easily become entangled in the net and even prick painfully. Be careful when caring.
They are adapted to survive in oxygen-poor waters. Their modified intestine functions as an additional respiratory organ thanks to which they can draw atmospheric air from above the water. In an aquarium, you can often observe them swimming rapidly to the surface to get air. This is completely natural behavior.
Nutrition and feeding
Omnivorous and unrefined fish.
They can be given good-quality dry food falling to the bottom, regularly supplemented with frozen and live food, e.g. artemia, bloodworm, hydration, daphnia.
A small herd of kirsky requires min. 54 l aquarium, necessarily with a soft substrate, so that they do not hurt their delicate mustaches. They will feel best in an Amazon-style biotope tank.
For this you will need river sand, dry roots, twisted twigs and leaves of e.g. beech, oak, ketapang. Such decorations will release very desirable tannins into the water and will color the water the color of weak tea. Additionally, you can also filter the water through the peat. The light should not be too bright.
Plants in natural habitats are absent. A peaceful species. Can be combined with small tetras, cyprinids, labyrinths, hookahs and mild catfish. It won’t be good company for much larger and aggressive species.
The reproduction is similar to that of other cuiras.
The spawning aquarium should have min. 45 cm long. Sand may be used as the substrate, but is not necessary. A small sponge filter is sufficient for filtration. The optimal parameters of water for reproduction are 6.5 pH and 24 ° C.
It may help to run the water through a peat filter or use demineralized water. We also place clumps of small-leaved plants or artificial aquarium mops in the tank. There should be 2 or more males for each female. Before the planned spawning, the fish should be fed more abundantly with live or frozen food. When the females are clearly thicker (full of eggs), a large change of cooler water should be performed (approx.
50%), aeration should be increased and circulation strengthened. We repeat this process every day until spawning. It should be noted here that many species breed seasonally. If the fish won’t wipe out in summer, try in winter. In addition, patience is recommended as some species reach sexual maturity late.
It is worth trying different approaches, e.g. replacing them at a different time of the day, increasing oxygenation, etc. Courtship begins with males. They chase the female around the aquarium. After a few days, the roles reverse and shortly afterwards spawn in the T-position typical for cuiras – the male at an angle of 90 ° to the female covers her head with his pectoral fins and releases the milk into her mouth.
The female releases the already fertilized eggs into a basket made of her pelvic fins, and then flows away and lays them in a selected place, e.g. on the aquarium glass, a flat stone or among small-leaved plants. The situation repeats several times and usually lasts 2-3 hours. During the entire cycle, the adult female lays 100-200 eggs. After spawning, adult cuiras should be separated or the eggs should be transferred to a separate aquarium.
Eggs mold easily. You have to closely observe and remove every rotten grain of roe. Adding a few drops of methyl blue to the water can also reduce this process. Hatching takes place after 3-4 days. Initially, the larvae feed from their yolk sac.
After this time, you can start feeding them the smallest foods, e.g. brine shrimp larvae, micro nematodes. The young require excellent water quality to develop properly and appear to be less susceptible to disease when kept in a thin layer of sand.