🐠 Aquarium Fish Guide
Browse reef and freshwater aquarium fish. Filter by reef safety, temperament, and difficulty. Click any fish for detailed care info and compatibility.
Choosing Reef Safe Fish
A "reef safe" fish is one that won't eat your corals, clams, or ornamental invertebrates. Most clownfish, gobies, blennies, and cardinalfish are considered reef safe. However, "reef safe with caution" fish like certain wrasses and dwarf angels may nip at coral polyps, especially if underfed.
Temperament matters as much as reef safety. A peaceful tank with gobies and cardinalfish is very different from a semi-aggressive community with tangs and wrasses. Always research minimum tank sizes — many popular fish like tangs need 75+ gallons to thrive, and keeping them in smaller tanks leads to stress, aggression, and disease.
Common Mistakes
Adding too many fish at once overwhelms your biological filtration. Start with hardy species like clownfish or chromis, wait 2-3 weeks between additions, and always add the most aggressive fish last. Use our Compatibility Checker to test your planned livestock list before buying.