Fish That Start With G - Page 2 of 2
Browse all aquarium fish species with common names beginning with "G". Each profile includes care requirements, water parameters, tank size recommendations, and compatibility information for freshwater, marine, and brackish species.
Green-peritoneum snailfish
Paraliparis entochloris
Paraliparis entochloris is a deepwater snailfish from the northwest Pacific, and the name is basically calling out its weird party trick: it has a green peritoneum (the lining around the organs) that can show through the body wall. This is not an aquarium fish at all - it is a cold, deep, bottom-associated species that is mostly known from scientific collections rather than the hobby.
Guaruba moenkhausia (Guaruba tetra)
Moenkhausia guaruba
Moenkhausia guaruba is a newly described Brazilian characin from the upper rio Braco Norte (Tapajos system), and it gets pretty big for a Moenkhausia - think "chunky, fast tetra" vibes. Since its formal description is recent, real aquarium-specific info is still thin, so I'd treat it like a larger, riverine Moenkhausia: keep a proper group, give it current and open swimming room, and expect it to act like a confident midwater schooling fish.
Guaymas goby
Quietula guaymasiae
This is a small, bottom-hanging goby from Mexico's Gulf of California, usually found in shallow estuaries and lagoons. The really cool bit is it can do facultative air-breathing, so its built for those warm, low-oxygen, mucky spots. Its not a typical community freshwater fish - think brackish/marine lagoon goby that wants sand or mud and calm water.
Gubal goatfish
Upeneus gubal
Upeneus gubal is a tiny Red Sea goatfish that cruises over sand and mud and uses its little chin barbels to feel around for food. Its max size is under 9 cm standard length, so it is more of a "dwarf" goatfish compared to the bigger goatfish you see in the trade. Because it is a wild marine demersal species from the Gulf of Suez area, it is not something you will run into with a normal, well-established aquarium care playbook.
Guenther's gudgeon
Acanthogobio guentheri
This is a Chinese river gudgeon from the upper Yellow River area, a bottom-hugging little cyprinid that spends a lot of time cruising the substrate. Its vibe is more "stream fish" than "tropical community" - give it good flow, lots of oxygen, and a sand-and-pebble setup and it really shines.
Guinean sole
Synaptura cadenati
Synaptura cadenati is a West African sole that lives right on the bottom over sand and mud, usually in shallow coastal water. It is a flatfish with little white spotting on the eyed side, and it tops out around 35 cm - more of a food-fish than something you will realistically see (or want) in a home aquarium.
Gulf hake
Urophycis cirrata
Urophycis cirrata is a deep-water phycid hake from the western Atlantic, and it has that classic "cod-family" look with a little chin barbel and long, feeler-like pelvic rays. Its whole vibe is muddy-slope bottom dweller, cruising around in colder water way deeper than any normal home aquarium is built to handle.
Guppy
Poecilia reticulata
The Guppy is one of the most popular freshwater fish among aquarium enthusiasts due to its colorful appearance and lively nature. These fish have a wide range of vibrant colors and tail shapes, making them a visual delight in any aquarium. Guppies are known for their peaceful temperament and ease of care, making them ideal for both beginner and experienced fishkeepers.
Günther's karanteen
Crenidens macracanthus
A small marine sparid (seabream) from the Indian Ocean (FishBase: eastern Indian Ocean-India; also recorded from Pakistan) with distinctive incisor-like teeth; references note its diet is mainly algae and its dentition appears specialized for grazing. Rarely encountered in the aquarium trade; most information is from ichthyological sources rather than hobby care guides.