Sewellia IDs

[kim m]

So, not to make too confusion in my other thread I thought it would be good to start a new one specifically about IDing my newly purchased ones…

This was imported as “breviventralis” via Ruinemans in Holland. I find the very close to pictures of SEW04.

[kim m]

Second one, also from the batch with “breviventralis”. I am not shure what this is. There were only 2 and they were bigger and paler than the others.

[kim m]

Third from “breviventralis”…seems like SEW03 to me:

[kim m]

SEW01? Seems there is a bit difference between the specimens (small lines vs. spots). I photographes 3 different ones from different angles.

[kim m]

Boight as Sewellia marmorata. Seems OK?

[mikev]

Sew04 in the first post, Sew02 == Sew03 in the second and third post.

(Incidentally, “breviventralis” shipments usually have mostly Sew02=03 and few of Sew04…. You want more of 02=03 since they can be bred… 04 so far is unbreedable.)

In the fourth post: probably Sew01, but do seem just a bit different. The 2nd photo shows a fish with light head — this is almost certainly a disease, bacterial.

Marmorata seems marmorata.

[kim m]

Last but not least; I had a tank with the remains of a S. lineolata breeding group that I wanted to stock up…but the new ones are a bit different from theold ones. As these Sewellia clearly isn’t as straight forward to ID as I had hoped, I wanted to include these in the thread to get an opinion…two “typical” specimens of old and new origin:

[kim m]

@mikev said:

Sew04 in the first post, Sew02 == Sew03 in the second and third post.
(Incidentally, “breviventralis” shipments usually have mostly Sew02=03 and few of Sew04…. You want more of 02=03 since they can be bred… 04 so far is unbreedable.)
In the fourth post: probably Sew01, but do seem just a bit different. The 2nd photo shows a fish with light head — this is almost certainly a disease, bacterial.

Thanks Mike.

I have 9 of each type if the big pale one I didn’t have an idea about and the third are the same. I emptied the tank in the shop 😉

Regarding the SEW01 – I will do a “group shot” from above before releasing them into the breeding tank (sometime this week).

[mikev]

Regarding Sew01: I’d treat the group. Pale head is a bad symptom.

This is inaccurate but the author is correct that this is serious. and may wipe out the entire group.

Minocycline may or may not work, but it is a good choice for the first antibiotic to try.

[kim m]

@mikev said:

Regarding Sew01: I’d treat the group. Pale head is a bad symptom.
This is inaccurate but the author is correct that this is serious. and may wipe out the entire group.
Minocycline may or may not work, but it is a good choice for the first antibiotic to try.

Monocycline/Tetracycline and other antibiotics are very difficult to get hold of in EU, even if you go to a vet. JBL Furanol 2 is the best I can do (even illegal in Denmark, but have some from before all that was banned). It works for Corydoras which are fairly sensitive, so might be OK for Sewellia too.

[mikev]

Furan2 is often helpful with hillstreams and seems somewhat similar to Furanol 2. Worth trying.

[kim m]

Any thoughts on the lineolatas? Just differences within the species?

Good article you linked BTW!

[olly]

Yes, different populations of lineolatas have differences in color.

[mikev]

As these Sewellia clearly isn’t as straight forward to ID as I had hoped,

Hmm…. actually Sewellia’s are about the easiest hillstream genus to ID 😛

Good article you linked BTW!

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.

[torso]

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

[Author]

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