The survey of cellular sequence of the retina structure of the Acipenser stellatus eye

Sturgeon fish of extremely great commercial value belong to one of the most ancient groups of the osteichthyes. With the aim of studying and comparing retina structure and its importance in fishes, Acipenser stellatus, has been selected as a benthic fish without sufficient color vision and accuracy.it is assumed that fish eye can be well adapted to the environment and feeding behavior. For this purpose the eyes were dissected out and fixed in Boins fixative. Cornea and lens were remoted and Retina was refixed 70% methanol for 24 hours, dehydrated, cleared and paraffinized in blocks. 5µ microns section were cut and stained with hematoeyline and eosin. Observation whit light microscope and SEM showed that Acipenser stellatus retinal photoreceptors were all comprised of cone cells and without rod cells. The number of cone cells in dorso – temporal quadrant was more compared to others it. Single and double cones were found. Low Diversity and few number of cone cells approve weak vision and few dependence of color vision in this fish.