cf. sanchesi Nijssen
& Isbrücker, 1967
his Corydoras is not too well known
in the hobby and has been only sporadically imported into the U.K.
It is quite a plain looking small Cory with a sandy coloured body,
small spots to the head and the predorsal area, in fact it is not
too unlike Corydoras xinguensis from Brazil which has the
spots over the main part of the body area and also Corydoras
polystictus from Brazil which has the same markings but is a
more dumpier looking fish than sanchesi
The one unusual feature of this
Corydoras is that the males have an extended top caudal
lobe, which you can just see on the male in the accompanying photograph.
This is a feature, as far as I know, that is quite unique to the
Corydoras genus and this alone should make it an interesting
species to keep. Corydoras breeder and Catfish Study Group
member, Ian Fuller, has bred this species and has notified me
that this feature appears on the males on about the 10 week period,
so if buying young fish you could very well get your pair, but
even better, 2 males and one female.
Ian has kindly prepared for me a spawning report on this species
and the difficulty of rearing them, especially pertaining to the
water temperature, this appears below in the breeding section,
but if you want to see the fry growth accompanied by the line
drawings prepared by him, it is just a click away in the Articles
section of ScotCat.
Acknowledgements : Ian Fuller for the above photo and the
information given for this Factsheet.
Update: This is now thought not to be a
species of Corydoras sanchesi, but very similar, so it
is given the cf. name meaning similar to.
Dorsal 1/7; Head short and compact. Male with
extended top lobe to caudal fin.
Body sandy coloured with fins all clear with
the first spine to dorsal fin darker. Small spots to the head and
the predorsal area.
This is akin to most of this genus, very peaceful,
and would be best housed with small to medium tankmates such as
Tetras, Rasboras and Danios or in a
species tank for breeding purposes.
The spawning followed the typical Corydoras
T mating position. The fish took over eight hours
to lay 50 plus 1.8mm diameter eggs. There was none of the usual
hustle and bustle, with the male chasing and pestering the female.
He would just gently glide around her offering himself sideways
on, first from one side, and then the other. Eventually the female
would make contact and they would lock into a clinch. During this
locked position, both fish would quiver for a few seconds. Between
3 and 7 light orange coloured eggs would be deposited into the
females ventral fin pouch, the pair would then part, with the
male wandering off rummaging in the gravel for food, and the female
just leaning on one pectoral fin, resting.
The female would rest for anything up to ten minutes before scurrying
off looking for a suitable place to place her eggs. Most
of the eggs were deposited in the Java Moss, with just one or
two stuck to the tank sides, and a couple on the side of the filter.
Based on the first spawning the eggs will take four days to hatch,
and the fry are large enough to take newly hatched brine shrimp
three days after hatching. Further foods will be micro worm and
powdered flake, followed by larger offerings of grindal worms
and sifted Daphnia, as the fry get larger.
When the fry get to around 12mm, whole
tablet food will also be given. The fry swarm all over these tablets
when they are offered. Its a magic sight to see dozens of
fry gathered all around and feeding so avidly.Small water changes
are made every day once the fry are feeding, with particular care
being taken to use water of exactly the same temperature. If the
temperature differs by more than a degree it can wipe out a complete
brood. These water changes are essential if the fry are to develop
to their full potential.
The usual fare for adult Corydoras,
a good quality flake food, tablet food, frozen bloodworm and whiteworm
= helmeted; doras = leathery
skin,(helmeted Doras) cuirass.
sanchesi: Named after
Mr.Gijsbert Harry Sanches.