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There could be any number of reasons or a combination thereof. Poor water quality, meaning high levels of nitrates, nitrites, low or high PH, high levels of ammonia. Very low or very high water temperatures, poor quality of food, disease, etc. You should find out the specifics on the types of fish you wish to keep, water temps, etc. TEST your water and do partial water changes frequently.
What else can I help you with?
Can tropical fish live with marine fish?
NO do not put tropical and marine fish together because marine fish have salt water that has to have specific things in it other Wise they will die .but tropical fish just have to have warm water with a heater .you cant mix these together because of the water and ALL your fish will DIE.
If you feed your goldfish tropical fish food will it get sick or die?
It won't die, but coldwater fish have different nutritional needs from tropical fish. It just won't be as healthy as it should be with the proper food.
Why do you need to acclimatise the water for a fish?
Every fish lives in a different inviroment.If its a tropical fish and the water is to cold it will die.
Tropical fish survive in cold water?
Most tropical fish will die if left for extended time in cold water. Some tropical fish may be able to tolerate cold water, but the result would likely be early death and disease.
Will tropical fish die if you put them in cold water?
Yes they will die because tropical fish are kept in an aquarium with heat control for the temperature of the water, they will not survive in cold water. Put a tropical fish in cold water it's metabolism will slow down to the point its body no longer works, it won't be able to digest food, will become very lethargic, and die.
Is a catfish a Tropical fish?
No, catfish is not a tropical fish.
Is it bad to put tropical fish in with river fish?
Yes, it is bad to put tropical fish in with river fish. The river fish can make the tropical fish sick.
Is it all right when tropical fish goes into a tank that was used from goldfish?
Only if it has a heater in the tank other wise the tropical fish will die. They are warm blooded instead of cold blooded.
Is a siclet a tropical fish?
Yes, a siclet is a tropical fish
Are seahorses tropical fish?
no they are not TROPICAL FISH NO NO NO BLACK ANGELFISH IS
Can tropical fish live with lake fish?
No. Tropical Fish required warmer water.
Do tropical fish live in seawater?
There are millions of tropical fish in the tropical oceans. But they are all marine fish not freshwater fish. Freshwater tropicals can not live in saltwater.
