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Corydoras caudimaculatus, Rössel, 1961

Origin:Brazil, Rondonia provice, main stream of the upper Rio Guapore.

Etymology: Caudimaculatus means spotted tail.

Synonyms:None

First European import: Unk First American import: USA, 1959, by Harald Schultz.

Description:See picture, the fish are more robust than Corydoras guapore and Corydoras similis, and have a short snout as opposed to Corydoras ourastigma. An easy way to distinguish these corydoras from other's in the group is besides the behaviour the spotted adipose fin.

Care: Corydoras caudimaculatus has similar requirements as other Corydoras, but should be kept at a bit higher temperatures. Furthermore these fish are more sensitive to pollution than most other corydoras, and should be kept in well filtered tanks, low in nitrates. Frequent waterchanges, soft and slightly acidic water are beneficial, especially in the beginning. If the fish are well accustomed they can also be kept in a bit harder water with a pH between 6.5 and 7.5. Corydoras caudimaculatus is not a very active swimmer, usually they will just quietly lie around in a corner of the tank, occasionally moving a bit, but never far away from the group.

Temperature:24-26 degrees Corydoras caudimaculatus

Feeding: Omnivorous, all food is accepted.

Size: Conflicting reports, either 4.5 or 6 cm. (Note from the author; I've never seen Corydoras caudimaculatus larger than 5 cm)

pH: 6.0-7.5

Breeding: Difficult. Besides soft water, which should have low nitrate values, Corydoras caudimaculatus is hard to get to breed. Frequent coldwater/freshwater schocks for a prolonged period may result in succes. Large amounts of small live food, and a low bacteria count(peat filtration) may also be beneficial. If the fish spawn, the females will lay up to 100 eggs, approximately 2 mm large. The fry will hatch in approximately 5 days, and be free swimming after another 3 days, at which stage they can immdiately be fed newly hatched artemia nauplii.

Sexual dimorphism:Unknown, probably similar to other corydoras, but only noticeable in full grown animals that have been well conditioned.

Prices:8€

Additional:

Picture references:Picture 1: E. Naus

References:Hierronimus, H. (1997): Ihr Hobby: Corydoras Pantzerwelse. Bede Verlag, Ruhmannsfelden, Germany.Baensch, H. A., Riehl, R.(1985): Aquarien Atlas II. Mergus Verlag, Melle, Germany.Lambourne, D. ((1995): Corydoras catfish, An Aquarist's Handbook. Blandford, London, UK.

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