are loaches attackers

PartyAnimal1UK said:
thanks for all your replies if you don't hink its him why did i catch him attacking the molly, water qualities are fine, why do you ask can that cause injuries to the fish. The tetras have war wounds as well and i have watched them and they are really placid, then only ones i was worried about was the black widow but after watching them i know its not them. Ive tried all the fish stores and no one wants him i'm so stcuk, whats happens to them if you flush them down the loo, do they still live. :help:
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Loaches are gentle community fishes. If your loach is attacking the other fish in your tank then there must be some outlying reason as to WHY he is attacking those fish.

It boils down to tank size and water parameters. If your tank is way too small for all your fish, then *any* of your fish might get stressed out enough to go nuts and start attacking the others. If your water parameters are out of wack, this too could cause massive stress to any of the fish and cause them to behave out of character.

We know you have a 20 gallon tank. Now we need to know what kind and how many of each fish you have, and what the water parameters are. Ammonia, Nitrite, and Nitrate readings. We really can't advise without at least some of this information.

Roan
 
A 20 isn't big enough for a weather loach--they can get up to 8 inches. they are peaceful, i had one for years. He'd go frenetic and charge around the tank when the weather was changing (hence the common name), but never attacked anything.

I would NOT keep one in a bucket--they are amazing jumpers.

As for the other issues--those do NOT sound like fish bites. They sound like the type of infections common with a tank that is not cycled. Please list how old the tank is, and every fish that it in there, in addition to the test results.
 
Holly9937 said:
What is your ammonia, nitrite and nitrate? Can you give a complete list of fish that are in the tank?
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:confused:

Any fish will go after another that is weak/dying/dead. So your loach may have picked up on that with the molly, but I gaurantee if you had seen the entire process of the death, it was also not the only one to pick on the molly
 
How can they get wounds from an un cycled tank, i have just moved the tank as i moved house, but i changed only 20% of the water and i didn't wash anything. Shall i put the loach back in and just keep an eye on him again, i don't know what to do, coz so many fish have suffered and i have actually seen him attack, but after what everyone is saying i don't know what to do
 
I'm going to repeat what OrionGirl and several others have asked you:

"Please list how old the tank is, and every fish that it in there, in addition to the test results."

We can't help you without this information.

Roan
 
the tank is about 6 years old, there is now 3 neon, 3 of the yellow tetras and 3 of the red glow ones, 3 black widow, 2 guormis and a platy. i can't remeber the test but they were fine, could it have gone back to the beginning, even though i kept all the old water and didn't wash anything, my cory has now died, so i know it isn't the loach as he isn't in the tank, i don't kno what to do. Ran out of test kits, will have to get some more at the weekend.
 
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PartyAnimal1UK said:
the tank is about 6 years old, there is now 3 neon, 3 of the yellow tetras and 3 of the red glow ones, 3 black widow, 2 guormis and a platy. i can't remeber the test but they were fine, could it have gone back to the beginning, even though i kept all the old water and didn't wash anything, my cory has now died, so i know it isn't the loach as he isn't in the tank, i don't kno what to do. Ran out of test kits, will have to get some more at the weekend.
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Thanks. Post the test results once you get a new kit, please. This doesn't look like a fish compatibility problem.

Roan
 
When you redid the tank, did you keep the old filter media and gravel as well, or just the water? Unless you switched over the gravel and filter straight from the old tank to the new one, you might have killed off the bacteria colony in the media (if you're using the old stuff at all), which would mean you'd have to cycle the tank from the beginning. I made this mistake when I did't know as much as I do now, I used only the water and no filter material or gravel on my new tank and couldn't understand why it took 6 weeks to cycle the tank. Lesson learned, on my part.
 
I literally changed nothing, kept old gravel, didn't even take it out of tank, didn't touch filter just chaged about 20% of water as we where having transport water from house to flat. The only thing i did do, was once everything was in place every now and then i just took some the debris that was floating around the tank and then let the water settle before putting the fish back in, is there any way out of this or am i just gonna keep losing fish till they have all gone. Do you think i should put the loach back in, hie seems quite happy in his bucket, swimming and eating fine. I know he shouldn't be in there do you think it would be ok! THanks for all your help, by the way.x
 
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