Erromyzon sp “red spots”

[torso]

Hi all

I’ve got a bunch lately, well conditioned.

The dominace-fights started right after introducing them into the tank, set up the day of arrival. These pics are not good, as the dominant specimen started on the backside-glass.

The largest male is 5 cm long, a second about 4.5 cm. The rest: 3-4 cm. Remarkable is the splitting up of the bars in the zwo dominant specimen. Could be due to the age. Red spots as well: could be that they vanish with age too.

The species is identic with ‘Protomyzon’ sinensis, bred by Gerhard Ott in 2002. Those had red spots as well. Three spawnings – similar to the spawning of Pseudogastromyzon sp on loaches – and some youngsters, turning up with 10 mm from the substrate, all resting at a small size. That reminds the main problem in breeding Sewellia spp: if they are not getting a lot of food the first two weeks they never recover and remain small. I tried with S. speciosa now this: constant feeding with powdered dry food, even whithout apparent spawning activities. That works, but a good water management is crucial.

The behaviour of the group is similar to other hillies: constant search for food, companions and then chasing the others away.

Enjoy the pics

Cheers Charles

 

[mikev]

Nice! Hope you breed them too!

[Quill]

They are Erromyzon compactus, which is described from Ba Che River, Quang Ninh Province, Vietnam in 2004.

Also they can be found in Gunagxi Province,China.

[torso]

Thanks for the hint.

I only know this paper

http://www.beutelwolf.martin-skerhut.de/wp-content/uploads/2012/12/zt03586p186.pdf

And the pics there won’t fit. Boddy shape and markings are different.Do you have the paper about E. compactus?

Cheers Charles

[mikev]

Wetspot’s current photo:

Same species? — does not seem to be.

[Quill]

@torso said:
Thanks for the hint.

I only know this paper

http://www.beutelwolf.martin-skerhut.de/wp-content/uploads/2012/12/zt03586p186.pdf

And the pics there won’t fit. Boddy shape and markings are different.Do you have the paper about E. compactus?

Cheers Charles

Yes, that’s the paper.Body shape is the same, and the red spots are just faded by formaldehyde.

[mikev]

I’m not sure that the current “E.sinensis” is a sinensis…(see Wetspot’s photo above, and I’ll post my photos later — I cannot see any red spots on mine?! )… the pattern is quite different. It is an errormyzon of some kind, maybe a new one.

[torso]

To point that out, Mike: E. sinensis never has been traded (my opinion); the species, Gerhard Ott has bred in 2002, is identic with E. sp “red spots”, red spots vanished after conservation (profile should be adapted); the question, if E. sp “red spots” is identic with E. compactus is open (for me); the species shown as E. sinensis by Wetspot is not E. sinensis; E. sinensis and E. sp from Wetspot don’t show lateral red spots; I’m not even shure, that the E. sp by Wetspot fits to Erromyzon

Cheers Charles

[mikev]

I have seen *one* real e.sinensis as a contaminant with p.cheni years ago…and someone here imported e.sinensis (looked like real things) 2 or 3 years ago (all died)… so they were in the trade.

As for the Wetspots fish: yeah, I think they are erromyzons… I have some here, will take photos later.

Was the Ott’s account published somewhere? (I primarily want to know how they breed: diggers or scatterers? Suspect the former)

[torso]

Ok, Mike.

As containment I would agree. That happens now and then with different species. In Europe I haven’t seen them.

They are diggers as P. “cheni” are. Same procedure.

Paper: Matt has got it. And here

http://my-fish.org/erromyzon-sinensis/

Tap water Flensburg: Kh 7.3-8.1; Gh 7.7-8.4

Looking forward to pics.

Cheers Charles

[mikev]

this is the contaminant I saw back in 2006… never got that fish and felt guilty for years. But it is not just contaminants, Franksaquarium had a whole shipment in 2010 or 2011… all DOA but those where real “striped” sinensis… plus I recall Jim Powers owned a few years ago.

Thanks for the info — this is all I needed to know (==treat them as Chenis or Disparis).

Will try with photos soon … unfortunately, as happens too often lately, I had to grab them before it was too late, so they are in a 5g tank w/o substrate now .. hope they don’t kill each other before I can set up a tank, they are juicier than red spots. .. what I meant to say is that photos will be crappy, no light on the tank either and it is in a dark corner of the room.

[Plaamoo]

Wetspot had “e. sinensis” a year or so ago. I saw a few in an LFS and they were striped like the ones in Charles’ pics. They were very sickly looking so I didn’t buy them. If they’re from China Zhou Hang would be the one to ask about id.

[mikev]

Charles’ pictures are not sinensis… otherwise I cannot believe I missed wetspot’s listings, I check them all the time.

[Plaamoo]

Sorry, they weren’t listed as e. sinensis after all, and it was 2 years ago.

https://www.seriouslyfish.com/forums/freshwater-and-brackish-water-fishes/gastromyzon-type-id/

[mikev]

OK… these are E.compactus per the above discussion.

Here are a couple of lousy shots of E.mottled

If you know how to ask Zhou Hang, please do. If this fails perhaps we should ask Heiko?

[Author]

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