Commonly Referenced "Longfin" or "Rock" Gobies
Southern Longfin Goby (Favonigobius lateralis):
Appearance: A sandy brown fish with dark speckling and five pairs of black spots along its side.
Distinguishing Feature: Males have a dark first dorsal fin with a pale margin and a prominent elongate first spine.
Habitat: Found in sandy areas of estuaries and bays, often near seagrass and rocks, primarily in southern Australia.
Rock Goby (Gobius paganellus):
Appearance: Usually dark brown or black with light mottling.
Distinguishing Feature: Features a pale band (yellow or orange in males) on the upper margin of the first dorsal fin. Males in breeding condition become very dark and their anterior dorsal spines can appear longer.
Habitat: Common in rockpools and rocky seabeds across the UK and the Mediterranean.
Threadfin Funky Goby (Sicyopterus longifilis):
Appearance: A striking freshwater goby with a slender body and vibrant colours.
Distinguishing Feature: Notable for a tall, ribbon-like dorsal fin that flows in the current.
Habitat: Found in fast-flowing, oxygen-rich mountain streams in Indonesia and Papua New Guinea, where they use fused pelvic fins to "climb" rocks.
Key Identifying Characteristics
Dorsal Fins: Unlike blennies (which have one long fin), gobies always have two separate dorsal fins.
Pelvic Sucker: Most rock-dwelling gobies have pelvic fins fused into a suction cup, allowing them to cling to rocks in strong currents or waves.
Camouflage: Many species, like the standard Rock Goby, are masters of camouflage, blending into rocky and sandy substrates to avoid predators like bass and bluefish.
SKU: RBM
