If you're looking to add some fish to your platy tank, there are a few things to consider. First, platies are peaceful fish that do well in groups, so you'll want to choose companions that won't harass or outcompete them for food. Second, platies prefer water on the cooler side, around 72-78 degrees Fahrenheit, so tropical fish that require warmer temperatures are not ideal tankmates. With those things in mind, here are a few good options for fish to keep with platys:
1. Mollies - Like platies, mollies are livebearers that do well in groups and prefer cooler water temperatures. They come in a variety of colors and patterns and can add some beautiful visual interest to your tank.
2. Guppies - Another popular livebearer, guppies are also relatively peaceful and easy to care for. They come in an endless array of colors and patterns, so you're sure to find some that you love!
3. Tetras - Tetras are a great choice for many community tanks because they're relatively small, peaceful fish that do well in schools. They prefer slightly warmer water than platies (around 78-82 degrees), but as long as the temperature isn't too high they should be fine together.
4. Corydoras catfish - These bottom-dwelling scavengers make a great addition to any community tank. They help keep the substrate clean and eat any uneaten food that sinks to the bottom of the tank. Plus, their playful nature is sure to entertain you!