PlanetCatfish.com

My L95 has gone from: To: Over approx. 3 weeks..
Pretty high pH, around 8, no other symptoms, eats and looks healthy.
Have been reading about this happen to other L95 from time to time, but just checking with you guys if I should worry..
All black dots still really black..

This phenomenon is not unheard of. Amazonas had an article about it, it's not limited to just one species or genus and the reason is still unknown if I recall correctly.

If the behavior is fine I wouldn't worry. Keep photographing the fish, it may slowly revert back to its original colors.

Hi All,

I'm thinking out loud here:

If this is an unusual but "normal" phenomenon that occasionally occurs in some individuals without obvious causation or ill-effect, do you suppose that it might be a species-specific manifestation of the same phenomenon described elsewhere for bristlenoses (e.g., viewtopic.php?f=10&t=41862)? I mean, although the resulting color patterns are visually very different in the two species, could they both be expressions of some natural process of depigmentation? If so, then documenting and understanding the range of variation in this phenomenon might help someone find an explanation in the future. If it happens in other spp., what does it look like in those spp.?
Just a thought...

Cheers, Eric

Nabobmob1 wrote:This phenomenon is not unheard of. Amazonas had an article about it, it's not limited to just one species or genus and the reason is still unknown if I recall correctly.

If the behavior is fine I wouldn't worry. Keep photographing the fish, it may slowly revert back to its original colors.

bekateen wrote:Hi All,

I'm thinking out loud here:

If this is an unusual but "normal" phenomenon that occasionally occurs in some individuals without obvious causation or ill-effect, do you suppose that it might be a species-specific manifestation of the same phenomenon described elsewhere for bristlenoses (e.g., viewtopic.php?f=10&t=41862)? I mean, although the resulting color patterns are visually very different in the two species, could they both be expressions of some natural process of depigmentation? If so, then documenting and understanding the range of variation in this phenomenon might help someone find an explanation in the future. If it happens in other spp., what does it look like in those spp.?
Just a thought...

Cheers, Eric

Thanx guys! Hopefully you are right and I don't have to worry, but I do anyhow..
My thoughts are the he is stressed by my adonis, L25 and stingrays and is forced to stay out of hiding, then exposed to a brighter enviroment and that may or may not have triggered the change in coloration.
I have moved him to another tank, he didnt even tried to fler, feels more lazy than normal. He now lives in a 1225 liter tank with smaller fish and some L128 and a smaller L160, more hidingplaces and some calm for some time.
His new home..

Hi Jozi81,
Wow that's a beautiful aquarium. Would you please come over to my house and set up my aquarium to look so nice?
Cheers, Eric

bekateen wrote:Hi Jozi81,
Wow that's a beautiful aquarium. Would you please come over to my house and set up my aquarium to look so nice?
Cheers, Eric

Thanx Eric! No problem, always wanted to see the states! I do it for free, only cost you a ticket from sweden to USA

LOL. Okay, you have a deal! Just wait until I finally win the million dollar lottery!... but that might be a while.

Nabobmob1 wrote:This phenomenon is not unheard of. Amazonas had an article about it, it's not limited to just one species or genus and the reason is still unknown if I recall correctly.

Is the fish in this photo (image.php?image_id=16341, ) experiencing the same decoloration, or is this the "normal" coloration of the adult?

bekateen wrote:

Nabobmob1 wrote:This phenomenon is not unheard of. Amazonas had an article about it, it's not limited to just one species or genus and the reason is still unknown if I recall correctly.

Is the fish in this photo (image.php?image_id=16341,

Rhinelepis strigosa

) experiencing the same decoloration, or is this the "normal" coloration of the adult?

I can't answer that to me it looks like it's going through the same type of change seen in

I'll see if I can find that issue it was in when I get home from the office

it's in Amazonas English version Vol 3 Number 1.

here is a link referenced in the write up.

http://www.l-welse.com/reviewpost/showp ... 832/cat/15

Looking at the photos of on the l-welse.com website, this does look very similar to the photos of the shown in the other thread referenced above. Interesting. Thank you, Matt.

Cheers, Eric

Hi,

I think it's not the same what is happening to the L 95 above and all the other mentioned cases. The shown specimens on l-welse.com all changed back as far as I know. Some keep changing every two months, I also keep a P. nudiventris that is doing so (the one pictured in the Amazonas article).In my opinion it could be something like an allergy, because the number of known "colour-changing-specimens" is increasing drastically since we started to feed food with a higher content of proteins.

This is also whats happening to the mentioned Rhinelepis, years ago the black-yellow specimens have even been regarded as a potential new species. In contrast to H. luteus, in this case it's an aging process.

I have seen pictures of a yellow Pseudorinelepis sp. already, and it's different to the one above. If it is not getting brighter or more yellow then the fish is simply stressed or doesn't feel well.

Acanthicus wrote:Hi,

I think it's not the same what is happening to the L 95 above and all the other mentioned cases. The shown specimens on l-welse.com all changed back as far as I know. Some keep changing every two months, I also keep a P. nudiventris that is doing so (the one pictured in the Amazonas article).In my opinion it could be something like an allergy, because the number of known "colour-changing-specimens" is increasing drastically since we started to feed food with a higher content of proteins.

This is also whats happening to the mentioned Rhinelepis, years ago the black-yellow specimens have even been regarded as a potential new species. In contrast to H. luteus, in this case it's an aging process.

I have seen pictures of a yellow Pseudorinelepis sp. already, and it's different to the one above. If it is not getting brighter or more yellow then the fish is simply stressed or doesn't feel well.

Have to agree, pretty certain hes been taking some trashtalk from the more aggressive plecos in the tank, feels more relaxed already and if My mind dont play tricks, Evenås has gone darker already..
Thx 4 all your inputs!!

Well... It died..
Something was wrong...
Movie of my investigation of the stomach, didnt find anything strange..
Comments in Swedish, sorry 4 that..

http://youtu.be/NqxHEqaCIZU

Sorry for your loss.

Peace, Eric