school

I lost one of my three peppered corycats today. Since my once tiny school is now a pair, should I replace the lost cory? If so, will a new peppered cory school well with the other two (who I’ve had for about a year)? I also have 3 oto cats, 5 harlequin rasboras, and a honey Gourami in the tank...

Hi! I recently acquired a new tank on Craigslist... it is a five gallon with two Mollies and one Black Skirt Tetra. I bought the tank for my shrimps, wasn't told it already contained fish. I know that the black skirt is a schooling fish so I was planning on moving him/her to my 10 gallon when...

If my school band were to get a fish, would the fish be harmed in anyway by the noise?

I have 4 green corydoras aeneus: https://imperialtropicals.com/collections/south-american-catfish/products/green-cory-cat-corydoras-aeneus?variant=20828289985   and I want to get more. Mine are fairly new and are about 1-2 inches in size right now. Would albino corycats school together with...

I am currently writing as research paper on stocking my 125 gallon tank. I would like to add 5 angelfish to this tank plus some other fish. The dimensions are 48" x 24" x 24" so this would be perfect for angels. I have plenty of caves and driftwood with some plants (definitely not heavily...

So, I've heard much info on this and wanted to know the general TFF community's view. Thanks!

Which (small, community) fish form the tightest, most coherent schools/shoals? Opinions? Experience?