Introduction
Corydoras eques is one of the many small, armoured catfish from South America that are so popular in the hobby. An attractive little fish, its relative scarcity means that it costs rather more than its more common cousins. First described (as Osteogaster eques) as long ago as 1876 by the Austrian zoologist Franz Steindachner it has only intermittently appeared on importers lists.
Introduction
Corydoras julii was described by the Austrian ichthyologist Franz Steindachner in 1906. The original description does not mention who the fish was named after.
Distribution & Availability
Found in the Rio Parnaiba in Brazil, C. julii is available very rarely with almost all fish advertised being C. trilineatus. It is seen occasionally in the better shops as a wild caught import and is sometimes sold at specialist and club auctions. Considering how rare these fish are they are not that expensive being around twice the price of the common bronze and pepper corydoras.
Back in August I reported my Corydoras guapore had spawned and that I was hoping for some fry. I’m happy to report that I was able to raise fry from several different spawnings. In all I have raised around 60 fry and managed to sell some at the Catfish Study Group‘s annual auction last week.
Here is a short video showing some of the fry and a full account will be published on Planet Catfish in due course.
I’ve been trying to spawn Corydoras guapore for quite some time. I was given 4 fish from John Reid around 18 months ago and they’ve grown on to be two pairs. C. guapore are an unusual corydoras and successful breeding records are few.
The fish have been rather active recently and their colour has become more intense. I’ve been watching them closely for spawning signs but was on holiday last week and busy with work in the garden. It wasn’t until I did a water change last Sunday that I noticed there were some fungused eggs in the tank.
As is often the case with corydoras however it seems that they will spawn more than once over a period of time. I was lucky enough to capture some spawning activity in this (rather poor quality) video.
Fingers crossed for some fry although the eggs are few and very small.
Introduction
Corydoras concolor was described by Stanley Weitzman in 1961. It is one of the dwarf armoured catfish from South America that have become increasingly popular over the last few years. Small and peaceful it makes an ideal fish for a community tank or an excellent breeding challenge for an advanced hobbyist.
Corydoras carlae is a small catfish from the drainage of the Rio Iguazu in North Eastern Argentina. Described by Nijssen & Isbrücker in 1983 from material collected by JP Gosse in 1977. It has not been seen in the hobby up until now.
A new paper is presented by Pablo A. CALVIÑO & Felipe ALONSO in which two new species of corydoras are described. In the same paper Corydoras micracanthus is redescribed and the authors propose a new species group for all three – the Corydoras micracanthus species-group. This group is distinguished by:
Back to Nature Guide to L-Catfishes (Ingo Seidel, English translation by Mary Bailey)
First edition – 2008
Catfish have enjoyed a huge increase in popularity during the last 20 years. Only cichlids command similar levels of dedication and both catfishes and cichlids have a devoted and loyal following. Many new books have been written to cater to this growing audience and while some take a wide but shallow approach, the catfish family is large and varied enough to allow for more specialist titles.
Adult Corydoras rabauti are great looking catfish and a joy to keep. The fry are truly marvellous little things. See the full article at Scotcat.
Many fish have an iridescence that causes them to reflect light. Some tetras look as if they have electric lights inside them such is the dazzling effect. As the fish moves through the water their colours can change as the sunlight (or tank light) catches them at differing angles.
UK Aquarist 