Can you keep yellow bellied sliders with tropical fish?

YBSliders aren't salt water creatures, but do require hot water/living conditions (around 25-29 °C - 77-84.2 °F). You'll need to find a fish that doesn't require salt water (so I'm afraid that rules out both Marine and most Tropical fish) but loves warm waters.

HOWEVER, here is a list of FRESH WATER TROPICAL FISH:

African Butterfly Fish

Angelfish

Bala Shark

Betta Fish

Black Neon Tetra

Black Phantom Tetra

Black Skirt Tetra

Bleeding Heart Tetra

Bloodfin Tetra

Blue Gourami

Blue Ram Cichlid

Buenos Aires Tetra

Cardinal Tetra

Cherry Barb

Chinese Algae Eater

Clown Loach

Columbian Shark

Colombian Tetra

Convict Cichlid

Corydoras

Crayfish

Discus Fish

Dojo Loach

Dwarf Gourami

Firemouth Cichlid

Ghost Shrimp

Glowlight Tetra

Goldfish

Gold Barb

Gold Inca Snail

Guppy

Harlequin Rasbora

Head and Tail Light Tetra

Iridescent Shark

Jack Dempsey Fish

Kissing Gourami

Kribensis Cichlid

Marble Hatchet Fish

Molly Fish

Neon Tetra

Odessa Barb

Oscar Fish

Otocinclus Catfish

Pearl Gourami

Piranha

Platy

Pleco

Pristella Tetra

Rainbow Shark

Red Eye Tetra

Red Tail Shark

Red Belly Pacu Fish

Red Devil Cichlid

Rosy Barb

Rummy Nose Tetra

Scissor Tail Rasbora

Serpae Tetra

Silver Arowana

Silver Dollar Fish

Swordtail

Tiger Barb

Tinfoil Barb

White Cloud Mountain Minnow

White Skirt Tetra

Zebra Danio

Hope this helps :]

-Claudia