Membras martinica

FamilyScientific NameAuthorYearCommon Name
AtherinopsidaeMembras martinica(Valenciennes)1835Rough Silverside

Membras martinica

Unique Characters: Rostral sensory system present with four large depressions at anterior margin of frontal bones. Lateral axillary scale of pelvic fin well developed, greater than or equal to 1/3, usually greater than or equal to 1/2 length of fin. Origin of spinous dorsal fin anterior or posterior to anal-fin origin. Posterior margins of scales lacinate.

Similar Species:

Atlantic Silverside
Menidia menidia

Inland Silverside
Menidia beryllina

Menidia menidia
Atlantic Silverside – Menidia menidia
Menidia beryllina
Inland Silverside – Menidia beryllina

Atlantic Silverside Menidia menidia. Rostral sensory system absent, lacking pits, pores, or tubes. Lateral axillary scale of pelvic fin absent or poorly developed, less than or equal to 1/4 length of fin. Spinous dorsal fin always anterior to origin of anal fin. Origin of spinous dorsal fin posterior to vertical through anus. Segmented anal-fin soft rays 20-27, rarely 19. Lateral scales 39-47, rarely 38.

Inland Silverside Menidia beryllina. Rostral sensory system absent, lacking pits, pores, or tubes. Lateral axillary scale of pelvic fin absent or poorly developed, less than or equal to 1/4 length of fin. Spinous dorsal fin always anterior to origin of anal fin. Origin of spinous dorsal fin anterior to vertical through anus. Segmented anal-fin soft rays 8-19, rarely 20. Lateral scales 28-41, rarely 42 or 43.

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