Fish That Start With F - Page 2 of 2
Browse all aquarium fish species with common names beginning with "F". Each profile includes care requirements, water parameters, tank size recommendations, and compatibility information for freshwater, marine, and brackish species.
Freshwater shark
Wallago attu
Wallago attu is one of those true monster sheatfish - a long, compressed catfish with a ridiculously huge, deeply cleft mouth that makes it an absolute vacuum cleaner for anything it can catch. In the wild it hangs around deep, slower water over mud or silt and spends a lot of time tucked into holes and cover. In aquariums its main care requirement is simple but brutal: space (think indoor pond), because it gets enormous and anything smaller than it is food.
Frogmouth sculpin
Icelinus oculatus
Frogmouth sculpin is a little coldwater, bottom-hugging marine sculpin from the Pacific coast. It spends its time sitting on the substrate and blending in like a living rock, then darts short distances when food shows up. Super cool fish, but it is absolutely not a warm reef tank animal - it really wants chilly, oxygen-rich water and a calm setup.
Fulvopelvis shrimpgoby
Vanderhorstia fulvopelvis
This is a tiny little shrimpgoby from Okinawa (Japan) that lives down on sand and rubble and does the classic prawn-goby thing - hanging at a burrow entrance and relying on a snapping/pistol shrimp roommate for the digging. Its name literally points at a shiny yellow mark on the male's pelvic fin, and the fish itself is patterned with yellow spotting and a clean stripey/barred look.
Fushun gudgeon
Gobio fushunensis
Gobio fushunensis is a little bottom-hugging gudgeon from China that spends its time nosing around the substrate for tiny foods. FishBase lists it topping out around 5.6 cm standard length, so think of it as a small, subtle stream fish rather than a flashy centerpiece.