Myleus Schomburgkii / ERH / black bar red hooks with burn/bite marks?

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eklikewhoa

Jack Dempsey
MFK Member
Apr 4, 2012
1,483
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Nha Trang, Vietnam
This started off as tiny specks on their sides but after about 6months it has developed into a wide vertical bar, when viewed up close it looks like a scab/burn mark and is protruding slightly like a scab would.

I noticed that it is only on my males.

They are in a group of 20, there are 7 males in the group with 3 of them being the biggest and with the most markings. I wanna say it's them attacking each other but I have never witnessed any all out fighting or even nipping at each other's sides.



some further details...

Fed daily with a pellet mix that consist of
  • Ken's Premium 5mix sticks
  • Ken's Premium catfish sticks
  • Ken's Premium krill sticks
  • Jakes Veggie sticks w/ calcium
  • HBH Super Soft & Moist krill
  • Ken's Meaty wafers
  • Tilapia, market prawns, silver rasboras chunks, night crawlers, superworms once and a while.

Water params,wc, etc...
  • NH3 - 0
  • N02 - 0
  • N03 - 10-20ppm (measured before water change)
  • Water change is done at least once a week - 80%
  • Water change mid week if fed frozen foods to the tank - 80%
  • temp ranges from 77-80f
  • pH ranges 7.6 - 7.8

more tank specifics...
  • 180g 6x2x2
  • 75g sump
  • 2x Mag3 returns
  • 3x Fluval FX5
  • 2x Eheim 150w heater
  • 96w compact pc light on for about 7hrs and LED nightlight on otherwise
  • Bare bottom
  • zero hardscape

Took a short vid of the silver dollars to try and get a decent shot since they move so fast, water is a bit murky cause they were just fed.

[video=youtube;Cr62CJPWFj8]https://www.youtube.com/watch?v=Cr62CJPWFj8[/video]


If anyone has any suggestions, seen this before, help, possibly a way to cure it, or somehow get rid of it please don't hesitate to chime in.
 
Mine are the same just not as bad as yours. Mine still look like scratch marks but may eventually turn out like yours. I see them scratching themselves on the ornaments and sand like they have some kind of irritation but no obvious signs on the fish. Like yours it's only affecting my males.

I also noticed other Myleus Schomburgkii with the same look if you search google images.

Just found this...

http://www.monsterfishkeepers.com/f...please-help!&p=5009062&viewfull=1#post5009062

This may be our answer as it affects silver dollars. But why just males?
http://animal-world.com/encyclo/fresh/information/Diseases.htm#BlackSpot
 
Blkpiranha said:
If you find out let me know as mine are the same just not as bad as yours. Mine still look like scratch marks but may eventually turn out like yours. I see them scratching themselves on the ornaments and sand like they have some kind of irritation but no obvious signs on the fish. Like yours it's only affecting my males.
Click to expand...

will do, hopefully someone will chime in eventually.

Mine started off as scratch marks and it's now like this. I have nothing in the tank and and if I did, it was driftwood that stayed in the tank for at most, a week or two.
 
Wow! My wide bars do not have anything like that! I've never seen a scratch. Sorry but how do you sex them? I'm guessing anal fun length? Mine are huge compared to yours

Sent from my LG-P999 using MonsterAquariaNetwork App
 
snake8myelbo said:
Wow! My wide bars do not have anything like that! I've never seen a scratch. Sorry but how do you sex them? I'm guessing anal fun length? Mine are huge compared to yours

Sent from my LG-P999 using MonsterAquariaNetwork App
Click to expand...

:ROFL:


how many do you have together?

These are the Thin bars, red hooks and don't get as big as the EBH. I've read sexing is done through the shape of the anal fin, males form a double hook like shape while females have the long sickle look.
 
This is probebly easier then going through the treat:

Myleus Schomburgkii
This has a single vertical black bar that starts in the middle of the dorsal and finishes in front of the anal fin. A shoal swimming among twisted roots and branches creates the most wonderful of Amazonian themes along with a shoal of Pimelodus pictus and Leporinus.


There are currently three regional variants of the species. Two to me look very similar, but I suspect that the first will soon be described as a different species. This variant sports blue-white finnage with an extremely broad vertical vertical band while the other two have a red anal fin and a narrower black band.


The species is however only imported from time to time, and is collected from Brazil, notably the Rio Negro, Xingu, Araguaia, Venezuela and the Orinoco.


It is common for these fish to be imported with what looks like black spot disease. These black spots are scattered over body and fins and are smaller than a pinhead. This is also common in wild-caught Angels and geophagines. Although unsightly, these aren't really a problem - they are probably just "glochidia" - a larval stage of a freshwater mollusc.


What happens is that free-swimming larvae attach themselves to a host (the fish) and wait until it is swallowed whole by a particular bird. The mollusc larva then travel through the bird's digestive system, which triggers metamorphosis, before finally being excreted in the bird's faeces back to the river bed...


So you don't have to worry about clams appearing in your tank! As the fish grow, these spots will become less as layers of skin tissue flake off. So don't let this problem get in the way of your enjoying this fish - unless you have a kingfisher or fish eagle in your living room.


source:
http://www.fish-hub.com/forum/archive/index.php/t-60.html
 
Lifeofmyown said:
This is probebly easier then going through the treat:

Myleus Schomburgkii
This has a single vertical black bar that starts in the middle of the dorsal and finishes in front of the anal fin. A shoal swimming among twisted roots and branches creates the most wonderful of Amazonian themes along with a shoal of Pimelodus pictus and Leporinus.


There are currently three regional variants of the species. Two to me look very similar, but I suspect that the first will soon be described as a different species. This variant sports blue-white finnage with an extremely broad vertical vertical band while the other two have a red anal fin and a narrower black band.


The species is however only imported from time to time, and is collected from Brazil, notably the Rio Negro, Xingu, Araguaia, Venezuela and the Orinoco.


It is common for these fish to be imported with what looks like black spot disease. These black spots are scattered over body and fins and are smaller than a pinhead. This is also common in wild-caught Angels and geophagines. Although unsightly, these aren't really a problem - they are probably just "glochidia" - a larval stage of a freshwater mollusc.


What happens is that free-swimming larvae attach themselves to a host (the fish) and wait until it is swallowed whole by a particular bird. The mollusc larva then travel through the bird's digestive system, which triggers metamorphosis, before finally being excreted in the bird's faeces back to the river bed...


So you don't have to worry about clams appearing in your tank! As the fish grow, these spots will become less as layers of skin tissue flake off. So don't let this problem get in the way of your enjoying this fish - unless you have a kingfisher or fish eagle in your living room.


source:
http://www.fish-hub.com/forum/archive/index.php/t-60.html
Click to expand...


I think this is referring to a totally different problem.
I've helped import wild fish from Lake Tanganyika and the black "burn" spots this article is referring to is more of a flat black color that has taken place of the normal pigmentation of the fish. I've heard everything from bird poop to ammonia burns while in holding tanks/ shipping bags.
 
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