Thinking about buying your first tropical fish tank? Here are a few glorious aquatic species to start out with.

All the latest science news on tropical fish from Phys.org. Find the latest news, advancements, and breakthroughs.

The swordtail fish originates in tropical freshwater ecosystems in Central America. The species’ natural range stretches from Veracruz, Mexico, to Northwestern Honduras.

Tropical fish live in complex environments and they’re constantly faced with decisions: What to eat, whom to fight, where to go. Surrounded by predators, every move could mean life or death.

Non-native rats on tropical islands are changing fish behavior and it all comes down to bird poop. By Laura Baisas. Published Jan 6, 2023 9:00 AM EST. The Jewel Damselfish on off of a rat-free island.