Mine is a 6 month old aquarium. almost 7 out of 14 fish have died and i m unable to help. i have tetra fish, gold fish, crocodile fish. wud like to knwo the following:
1. what are the other com[atible fish i can keep in the aquarium its a little more than 1 foot high and wide, the aquarium.
2. how often should the water be changed in the aquarium?
3.what water should be used to fill the tank? normal tap water or somethign should eb added to it?
4. why are the new fishes dying even after they have been added with the old water they were bought with and after 4 months.?
additional information:
the oxygen pump is left on most of the time.
the water temperature is natural, means no heater or anything. its kept in my room.
kindly help i want to keep the fish alive, i dont overfeed them…!