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Gastromyzon sp. Not identified

 

 

 

 

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Sorry, I almost missed the thread.

G. stellatus as far I can judge it. Colour can vary from more greyish to green.

Mucus as consequence of injuries is not rare, normally the specimen won’t survive in the export, at least shouldn’t be shipped (there’s a new exporter at work). I had just once a batch in the import. They didn’t make it. Will try to find the pics. Sometimes they turn up in local shops of a retail chain, always from the same local importer and together with B. kweichowensis also injured.

Cheers Charles

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Sewellia SEW 02 were more efficient lately in a identic tank-set. I don’t think, S. marmorata is different in spawning. Saw some attempts, but no offspring as for SEW 02.

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Hi Matt

Should be B. xantomelas. Pattern doesn’t differ a lot, so it’s to be expected not to represent a new species. Like most Brachygobius they do well in hard water, for breeding it should be softend down to 8-10 KH.

Your specimen seems to be good conditioned, sometimes they arrrive in a terrible condition.

Cheers Charles

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B. kweichowensis: TL 8

B. leveretti: TL 12

 

 

 

 

 

 

 

 

B. k. gracilicauda is a synonym, right?

Your species is larger, than B. kweichowensis, right? It’ closer to B. leveretti in bodyshape, right?

Cheers Charles

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Mikev said

“not really… the author is mistaken that this condition is always a bacterial disease, and also that it is always minocycline-treatable. But no argument that this is a bad sign.”

I agree, Mikev. That’s why in import-stations there is always a diagnosis first.

@ Kim

As for the situation in EU:

http://www.manaus-aquarium.com/trichosal.php

is a good choice. Available in EU. Best stuff on the market at the moment. As for all fish with completely/partly lacking scales: tight controlling of the effects.

Cheers Charles

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and I doubt it, Kim.

Cheers Charles

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That will do, Kim.

I my tanks, the waterflow is directed from the right/left corner backside to the front glass. A flat large stone in front – like the one at left – placed in the backflow from the front glass helps the spawning pair to swim up once they cling together. Eggs drive away and fall into the coarse gravel.

Cheers Charles

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wonderful.

I tried for years to get the species without success.

Cheers Charles.

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Normal procedure would be, to give all infos on the website, Matt. That’s the the purpose of the site.  As he hasn’t even mentioned the “breeding” before I think, infos will be kept back for the issue to be first. I can understand, that the magazines like the “primeur” and authors like to be printed, but it is certainly disappointing for the website-team, which tries to keep up the idea of a breeding program.

Cheers Charles

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un update with breeding news from Germany

http://my-fish.org/annamia-normani/#comment-7185

Looking forward to the AMAZONAS-issue.

Cheers Charles

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Hi Kim

I tried different setups with groups of 8-12 adults.

Without snails and a thick layer of coarse gravel – gives the best results. I stopped this setup. See below.

With snails: important is a thick layer of coarse gravel – up to 15 mm diameter. Larger snails can’t enter the substrate, young Planorbarius corneus and Melanoides tuberculatus do. Up to 100-200 specimen in half a year (S. speciosa and S. sp SEW 02 are less productive).

With snails and sand: some offspring always turns up

With snails and shrimps: best result with coarse gravel, with sand still some offspring.

With Hyalella azteca (accidentelly), snails and shrimps: some offspring. Lowest rate of all setups

Best setup seems to be (didn’t try yet): a thick layer of coarse expanded clay and aspirating every week. As they can easily produce 400-500 eggs per month and given, that S. lineolata and S. sp. spotted are hard to stop once they started to spawn, that leads to a shedload of youngsters. The guys in Germany, who tried it back in 2009 soon stopped the trial.

I use shrimps to bring down the rate, because to sell offspring in great quantities is not worth the effort as they need about a year to reach a selling size of 4 cm.

Cheers Charles

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If I had newer ventral pics of the group, I could be more affirmative, Olly. There is a rest of uncertainty.

Cheers Charles

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TL, Matt. I’ve kept had M. opercularis in a large pond in summer, more than 12 cm TL counting the filaments of the tail fin. But 12 cm TL proximal from snout to tail for M. opercualris, M. spechti and M. ocellatus is a good size, hardly to be exceeded.

I haven’t kept the other spp

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I agree. The most conclusive is this female

 But there is another point: the form of the genital papilla. In this case it’s like that

 As I have no further pics of sexually active specimen which would give a clue, I tried to come back to the pics taken after coming in of the shipment. If I don’t miss the sexing by what you pointed out we have a female

and detail

 

 

another female

 

and males

 

 

I don’t know if it helps much. And to be shure it would need some more pics of sexually active specimen.

Sometimes I’m happy to see, that my fish seem to know more

Cheers Charles

[Author]

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