How many aquarium snails can I put in my 55-gallon fish tank?

You likely wouldn't have been able to see the eggs. It looks like it could be a trumpet snail given the shape. This species grows to be about an inch. Clip a piece of lettuce to the side of the tank overnight. In the morning, the snails should be all over it feasting. Remove your Nerite and dispose of the rest in the trash. You may need to do this several times.

The goldfish can get very big and may require a significantly larger tank as they grow and grow. As a rule of thumb, you need 1 gallon of water per inch of body length of fish. So if you have three 1 inch fish, you will need 3 gallons of water. I suspect you are at your max already in the smaller tank. Just so you know, most people do not have goldfish in tanks with tropical fish. You may consider getting two tanks One for your cold water fish like the goldfish, and one for your tropical fish that require a warm water temperature. For the goldfish I would suggest a minimum of a 20 gallon tank. For the Danio, I suggest to get a few more of these as they are schooling fish and a 10 gallon would be just fine. I hope this is helpful and please feel free to post any additional questions.

A 55 gallon tank is truly not large enough for an Oscar. Usually they are housed singly or in a mated pair. A single adult Oscar should have around a 75 gallon tank MINIMUM and a pair needs 100G or larger. Here's a bit more info on Oscars https://www.petcoach.co/article/oscar/

The salt would probably irritate the snails. If you still have frogs in the tank, consider a salt bath instead. Dissolve 1 tablespoon of salt in 5 gallons of water then remove the frog(s) from the main tank and allow for a swim of no more than 60 seconds in the salt bath. Rinse then return them to the other tank or hospital tank.

A snail would be fine but anything else and the Betta may try to bully or pick at it. Most fish ignore snails but watch closely that Norman does not take a lot of interest in the snail. If he does, you will need rehome the snail.

Hi Tori, I have found that fancy guppies are pretty, fun, and small fish that would do well in a small tank. Mollies would be another good choice. A 3 gallon could probably support 3 or 4 of them well. Beta fish don't seem to care much about snails in My experience. Have fun!

The rule of thumb is 1.5" of fish per gallon of tank. So estimate the length of each fish you have, add them all and divide by 1.5. This will give you the size tank you will need in gallons. In a 30 gallon tank you can keep 45 inches of fish (i,e, 45 fish, each 1 " long or 30 fish , each 1.5" long, etc. Do not forget to leave some space for growth of fish.