My boys and I have been collecting for our 180 gal brackish native tank, with several trips along the Louisiana gulf coast, lake Pontchartrain, and FW LSU lakes over the last year or so
baby (white?) mullets
While collecting this wkend in the Rigoles (BW, have caught full gamut of FW to marine fish here), I caught what I though was a small shad or silverside, but it is not.
It is about 1" long and has a very distinctive look, very narrow when viewed from above or front (it's "flat"), so it has little in the way of mass. It is not torpedo shaped, though longer than tall. It is silver with a bit of a metallic green look from the right angle.
It swims around unconventionally, with it's tail often hooked into a "J" to the left or right , and swimming with its head lower than tail, and turned sort of sideways as it moves by fluttering its tail/fins, giving the appearance of gliding/floating, rather than swimming.
It is a first class jerk, approaching other fish from above and nipping them on top, between the eyes. The largest fish with it in my quarantine tank is one of the jade gobies, 3" long and fat. Even he has been cowed.
Love this site. Pics eventually.