My 15 gallon community tank overstocked?

[karate626]

I changed the temp from 71 to 76. Out of the 3 platys (1 small male, 2 females) in the tank the largest female one died. There is some kind of white thing protruding from her anal fin. I do not plan on replacing her as you guys are saying my tank was overstocked. With one less platy is it still overstocked? Could I replace the platy with one more black skirt tetra to avoid aggression (I'm not seeing any though)?

Thank you

 

[karate626]

I love the tank. I'm still debating replacing the platy or not. I think I won't with another platy. The platys I have don't seem to school at all (Despite being male and female...no hounding) so I may add either another neon, gold barb (do they really school) , oto (I don't want to run out of algae for him) or black skirt tetra. Out of those three would you add any? I have 2 neons, 2 oto, 1 black skirt, and 1 gold barb (all of that is also listed on my original post along with the rest of the fish). Those are the fish I think would benefit the most with having a pal as they have less others of their kind. I'm just not sure which would benefit the most. Like I said before all the tetras are schooling together (thats 4 black neons, 2 neons, and one black skirt) so it is a school of 7 fish. They may all not be the same kind but they still school and eat like crazy when I feed them. I'm not seeing any signs of stress and the black neons and one of the neons are over 3 years old (rescued from a friends old tank).

Thanks for any advice.

 

[RTC GAR TSN]

IMO, I wouldn't add any more fish. I think the set up you have is great.

 

[karate626]

Okay I understand my tank is overstocked with the wrong amounts of fish. I bought a 20 gallon to go along with my 15 gallon. I am only adding one new species to this mix. Can you tell me what you think about these tanks. Here is a list of the fish species I want to have in whatever numbers are best between the 15 and 20 gallon. Neon, black neon, black skirt, cherry barb, gold barb, rosy minnow, otto, platy

Here is what I came up with

15 Gallon

6 neon tetras
3 Cherry barbs (1 male, 2 female)
3 rosy minnows (I've read they can survive up to 85 degrees. My tanks are set at 76)
2 ottos (to help with algae on the rocks)

20 gallon (will add objects and filter from my turtle and 15 gallon to speed cycling)

4 black neons tetras
4 black skirt tetras
3 gold barbs
2 platys
2 otos

Is that any better? Thanks for the help!