Current Stocking - 30 Gal And 2 20 Gal Long

I have a 30 gal with:
(May upgrade to 55 Gal)

Guppies - 5 Adults - 10 Teens (All Fins Coloring Nicely, Some Complete)
12 Adult Platys
2 Teenage Platy
3 Gold WCMM
4 Glowlight Tetras
5 Neon Tetras
2 Tiger Nerite Snails
1 Chinese Algae Eater

Platies, Tetras, and Gold WCMM's were in #2 20 Gal Long but RTS was getting too aggressive with Platies.

#1 20 Gal Long with:

Platy fry (Other fry will be added when born)
1 Red Cherry Shrimp
1 Tiger Nerite Snail

#2 20 Gal Long with:

1 Red Tail Shark (3 inch)
1 Gold WCMM (Bullied Guppies, Other Gold WCMM, Neons, It originally came from this tank with Shark and Shark ignores it. He won't bully Shark.)
1 Striped KuhlI Loach (Lone Survivor of 6. Been lone KuhlI for 6 months.)
1 Chinese Algae Eater (Shark chases a lot.)
1 Tiger Nerite Snail

Will possibly get Amano Shrimp. But not for Shark tank.

 

Will possibly get Amano Shrimp. But not for Shark tank.

junebug and TexasDomer he needs to change that stocking

 

Yes, you have stocking issues in both tanks if you'd like to discuss them.

 

What issues? Everyone's getting along at the moment.

 

Just because they aren't fighting, doesn't mean that there won't be health, overcrowding, or temperature issues.
30 gal:
CAE should be in much larger tank. They get very large and aggressive, and are not good algae eaters. He really should be rehomed. Even a 55 gal isn't big enough.

Neons, WCMM, and glowlights need to be in larger groups. In this tank, I wouldn't keep more than two of these species.

You have too many platies and guppies as well (they'll continue to reproduce and produce even more).

#2 20 gal:
RTS should be in a 48" long tank. They get large, active, and aggressive.

WCMM should be in larger group. KuhlI should be in larger group. They are very stressed kept singly.

Same issue with this CAE.

 

Never too many platies and guppies. RTS i've had a long time and is in the only place available to him right now. CAE are a disappointment but they are there til they become a problem.

 

It's quite easy to have too many platies and guppies. Regardless of how long you've had the RTS, the tank isn't appropriate for him. Rehoming him would be your best option.