Slender Smallmouth

Microstoma Microstoma
Slender Smallmouth - Marinewise © 2026 MarineWise

Quick Facts

Scientific nameMicrostoma Microstoma
Other namesSlender Argentine
SizeUp to 4.3 cm (1.69 in)
WeightA few grams
FamilyDeepsea Smelt / Microstomatidae

Distribution

Habitat & AU DistributionOffshore, oceanic, open water
Slender Smallmouth Distribution