Can I add my Betta to a 10-gallon tank with Platy, Cory, and current?

Typically beta fish are very territorial and have to be in a tank alone. Otherwise they will fight and possibly kill each other. I would recommend housing the beta alone to help prevent this. I hope this helps. Thanks for using Petco Pet Education Center, formerly Petcoach. Best of luck.

Female betta sororities are not "bad". They can be tricky to set up though. A 75 gallon tank is more than adequate for 15-20. Try to get them as close to age and size as possible and introduce them into the tank as a group. Provide PLENTY of cover (plants, hiding spots). Initially, there will be some squabbles and nipping as they establish their own heirarchy. Remove any that are overly aggressive. A betta tank may be too warm for Corys. Bettas do best between 78 F and 80 F whereas corys like water a bit cooler, 65 F to 75 F. A spotted leaf fish would not be recommended. It would likely eat the smaller bettas once it is grown.

Betta are definitively very territorial and you may notice multiple fights for space at the beginning. Definitively the aquarium must have multiple spots for hiding like Terra Cotta Flowerpots and PVC Piping, moss or bushy plants, ornaments, rocks and driftwoods. This will avoid open fights and will provide good places to have some rest.

A male Betta can be kept in a 10 gallon tank with 5-6 neon tetras. You will need to monitor for any aggression initially as well as for any fin nipping. Male Bettas are easy to distinguish from females by their brighter colors and larger fins.

If the Betta is not acting aggresively, there is no need to remove him. Guppies, especially males, will fight with one another but it usually isn't serious. Providing plenty of cover for them to hide may be all you need. If the fighting persists, remove the aggressive guppy to his own tank.

Most of the compatible fish are schooling fish that do best in groups of 4-8. This would include Neon Tetras, Ember Tetras, Harlequin Rasboras or White Cloud Minnows. That many fish may be too much for a 3 gallon tank. Other non-fish option include Ghost Shrimp, Zebra Snails or African Dwarf Frogs.

Hi there! The general rule of thumb is 1 gallon for each inch of fish, so I think that you may need a bigger tank. If the bettas are 2 inches each, they each require 2 gallons of water, making the minimum tank size 14 gallons. Since male bettas can be territorial and aggressive, I highly recommend a larger than normal tank with lots of hiding places for 7 fish (at least 20-25 gallons). You should also watch them very carefully for fighting, and have a backup plan in case any of them need to be separated. Good luck!