The name Ossetra corresponds to the species Acipenser gueldenstaedtii and has a firmer texture .
Acipenser gueldenstaedtii is much smaller than Beluga sturgeon ( Huso huso ) .
The name Ossetra corresponds to the species Acipenser gueldenstaedtii , which is much smaller than Beluga sturgeon ( Huso huso ) , and has a firmer texture .