part of part of has quality has quality Batrachoididae reflectivity laminar lamina optic choroid stratum argenteum of choroid choroid stratum argenteum In species known to have a stratum argenteum as adults, like the toadfish (Toad- fishes), the tapetum lucidum is absent or vestigial and there is little choroidal melanin[PMID:14738502] A silver reflective layer in the outer choroid, adjacent to the sclera, frequently present in fish larvae but not as frequent in adults. stratum argenteum UBERON:0013397