Today I saw all of my loaches(striatas and clowns) at the top of the tank tearing my upside down cat to shreds. they have lived with this fish since the beginning. This cat was in this tank before they ever were.
I caught them in the act of ripping him apart. I stopped it but his intestines were already ripped out. So I took him out of the tank and put him out of his misery. I feel so horrible he would have suffered otherwise I could see his intestines.
Has anyone experienced this?
I introduced 3 new loaches around 2 weeks ago. All at the end of the litter as far as size is concerned with my 5 existing clowns. Now, all the fish have been more aggressive than ever and they are fighting much more. For the first 2 weeks they were all happy go lucky and getting along. Now it appears the clowns that I have had for years are starting to fight. I believe the loach that died yesterday was in a fight. I caught two of my biggest fighting violently and sloshing in the tank today earlier just like what I saw yesterday. I calmed the fight down, but now I have never seen such violent behavior with any of my loaches before. Any adivce would be helpful I am concerned for my tiger pleco and my other upside down cat now. Should I put them in the tank with my smaller botia rostrata?
is there any reason this behavior might be happening? is it the introduction of the new fish or possibly that i fed them a piece of salad shrimp last week? I have not given them any salad shrimp in quite some time. I do feed them shrimp pellets and blood/glass worms on a weekly basis. i give them 2 protein days a week.
my biggest alpha is 6.5". the 2nd size is about 6.25", 5", 3.5", 3.5", 2.5", 2.5" clowns. I have 7 striata also in this 90 gallon. the largest is 3" the rest are around 2.5". Am I pushing it to be over stocked?
another note, i fed the fish this morning. like i normally do. I have been giving them a little more food in account for the new fish but this behavior is surprising me.
anyway, here is a link to a thread that has some videos with the tank in it. id have to dig for the picture threads.
http://forums.loaches.com/viewtopic.php ... 00#p191700
This is really unusual behaviour for clowns or striata. I have to wonder if the catfish were ill/dying and that's when the loaches started to pick on them. It's horrible but unfortunately not unheard of for usually placid fish to start picking on sick fish - somehow they know when something is up. Like the survival of the fittest in the wild. I know you look after your tank well, but you might just want to double check water quality and look for any signs of illness in the non-loach fishes you have, just in case. Make sure you have no 'dead spots' in the tank where water flow is slow and rearrange the decor to break up existing territories amongst your older loaches so that the new ones have a chance to settle in without too much aggro.
East of the Sun, West of the Moon.
The water quality has been good the last few times I checked over the last few days.
Ive been monitoring the loaches very closely the last few days. I see no visual signs of issues, no behavioral discrepancies other than what ive described. Also the feces looks normal.
For now ive removed tank ornament and left fake plants only to monitor the fish.
The only other time I have read of this type of aggressive behavior, it was related to breeding.
http://aquariumlore.blogspot.com/2006/0 ... loach.html check the section on breeding
http://www.loaches.com/loaches-in-books ... le-hammond is the original story I believe.
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