i have some koi fish 2 of them died in the past few days had these guys for more than 1 year now the others look very weak they have reddish colour under their find and tail and the body is very red.
there is only goldfish and koi in my tanklove these guys please help
Jeroen Wijnands
Favorite Answer
The red is probably ammonia burns. Shouldn't happen on a tank a year old. Get some air in and do a water change.
Devo Contreras
Do regular water changes if you want save them. Water changes should be up to 30 or 20 percent of the water weekly so evey friday or some day of the week you have to do a water change to get the ammonia levels down. And go to your local pet store and purchase aquarium salt to help reduce stress on your fish and it helps them breath better. And cheek that your filter is working or purchase a new one to help keep the aquarium clean. Like i said right know the first thing u should do is regular water changes.