FishProfiles.com Message Forums

Can you please give me some personal ideas on breeding C.rabauti, or else some good site on these Corydoras.

Thanks alot & best regards.

http://www.flickr.com/photos/corydoras/
Member of the Malta Aquarist Society - 1970.
http://www.maltaaquarist.com

Time for me to dig out the notes from the Lambourne book again. You will find these helpful! Lambourne Notes follow after the asterisks ...

**************************************************

Corydoras rabauti La Monte 1941

First collected by A. Rabaut 1940.

Named in honour of the collector, A. Rabaut.

Synonyms: C. myersi P. de Miranda Ribiero 1942.

Distribution: Brazil: Amazonas - Rio Javari (border river between Brazil and Peru); Colombia: Rio Amacayacu tributary of the Rio Amazonas; Peru: Loreto - Rio Yavari, Rio Ucayali drainage, forest creeks at left bank of Rio Carahuayte.

Max SL 55mm. C. rabauti and C. zygatus share the same colour pattern when adult, but the juveniles are completely different. In adult specimens, the body stripe is slightly broader and darker in C. rabauti (and in C. zygatus is bordered below with a green/gold sheen). In some specimens of C. rabauti, a faint dark blotch across the eyes is visible (this is absent in C. zygatus). C. rabauti does not grow to be as large as C. zygatus. C. rabauti was described by La Monte in 1941 from a juvenile fish of 13.7mm SL. C. myersi was described by P. de Miranda Ribiero in 1942 from a fish that must have developed its adult colouration. However, the juvenile colouration of C. rabauti is vastly different from that of C. zygatus: juvenile C. rabauti at 4 weeks are divided into three different colour zones, an orange head, a black body and white tail, the black extending from the operculum to a little way behind the posterior edge of the dorsal fin (which itself is orange), while C. zygatus has a uniform body colour with variable spotting, most prominent along the lateral junction of the body scutes, with two prominent blotches between the top of the head and the dorsal fin, a smaller blotch visible at the posterior base of the dorsal fin, and another smaller blotch at the anterior base of the adipose fin.

Breeding: Detailed Account: 2 males, 38mm, 2 females, 45mm, all specimens wild caught, breeding aquarium 25x20x20cm, furnished with 1.5 cm layer of fine, well-washed river sand, 1 box filter, 2 nylon spawning mops and a small portion of Java Moss, water chemistry pH 7.6, 14°GH, temperature 22°C, depth 15 cm (tap water aged for 2 weeks). Spawning took place after 20% cold water change which reduced the temperature from 22°C to 19°C. At time of spawning, temperature had again risen to 22°C. Typical T formation adopted, 100 eggs laid, egg dia 1.75 mm, deposited in clusters of 3-6 on the aquarium sides, in the spawning mops and in the Java Moss somewhat indiscriminately. Hatching time 4 days, fry free-swimming 2 days later. Measurement of SL during development: 4.5mm (7 days old), 6mm (2 weeks old), 8.5mm (1 month old), 10mm (6 weeks old), 15mm (2 months old).

[MY ADDITIONAL NOTE : the difference in the colour pattern between juvenile C. rabauti and C. zygatus has already been covered above, but it remains to state that photographs illustrate this very well: at 4 weeks, C. rabauti fry are very strikingly patterned.]

Adult colouration attained in 8-10 weeks.


Panda Catfish fan and keeper/breeder since Christmas 2002

Thanks alot for the interesting information. I have 6 & i think they are 3 males & 3 females. They are quite big & i think i'll try to breed them at the end of September, when the weather cools down a bit, here in Malta.



http://www.flickr.com/photos/corydoras/
Member of the Malta Aquarist Society - 1970.
http://www.maltaaquarist.com

My living room hit 89°F here in Eengland today - I dread to think what it's like in Malta right now - probably nudging 100°F or more if you're having the same furnace-like sunshine and cloudless skies we're having right now ...

I'd be rigging up a chiller over there even for Venezuelan Rams, let alone Corys ...


Panda Catfish fan and keeper/breeder since Christmas 2002

I keep my fish, especially the Corydoras in the basement, where the temperature is 5/6 deg.cel. lower than the house temperature. During the day it's about 31/32 deg.cel. & so the basement maximun temperature is 27/28 deg.cel.

After losing some Corydoras in previous years, i learnt the lesson & now my fish room is below street level.

http://www.flickr.com/photos/corydoras/
Member of the Malta Aquarist Society - 1970.
http://www.maltaaquarist.com

Now I could do with one of those - a basement that is!

Today my living room is at 84°F. I'm approaching the stage where I'll have to give my Pandas emergency water changes to cool them off ... last night it hit 89°F, and the tamk temp climbed to 81°F. Anything over 83 and it's time for me to start hauling buckets.

Just checked the tank temp - it's 84°F. Emergency water change time!


Panda Catfish fan and keeper/breeder since Christmas 2002

The weather is more cooler now & it also rained a bit. I will keep the Corydoras in the basement all year round, so i don't have to move them in May/June when the weather gets hot.



http://www.flickr.com/photos/corydoras/
Member of the Malta Aquarist Society - 1970.
http://www.maltaaquarist.com