I'm changing my 125 over to an African tank. I have the opportunity to get a school of 12 to 15 Synodontis Angelicus relatively cheap. Knowing that they hide quite a bit, I am looking for recommendations on what free swimmers I can have that would be compatible. I was thinking of Congo Tetras but wanted to know my options on not very aggressive cichlids. I thought about Frontosa but the water parameters are too different. Thoughts? Thanks in advance!