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¹ A.O. Kovalevsky Institute of Biology of the Southern Seas of RAS (IBSS), Russia, Sevastopol, 299011, Nakhimov Av., 2 DOI : 10.4194/TRJFAS29122 Viewed : 161 - Downloaded : 170 The species diversity, abundance and spatial distribution of the Black Sea ichthyoplankton in the spring, summer and autumn seasons of 2023 are presented. From March to October, eggs and larvae of 45 fish species from 25 families were identified in ichthyoplankton of the Black Sea. Eggs and larvae of seven fish species from four families belonged to the temperate-water fish while 38 species from 21 families belonged to the warm-water fish. In the nearshore coastal waters of the sea, 30 species of warm-water fish were registered in ichthyoplankton, while in the shelf and deep-water areas 23 warm-water fish species and seven temperate ones were recorded. Between March and April, mass spawning of the temperate-water Sprattus sprattus (Linnaeus, 1758) was observed with the maximum abundance of eggs (130.6 ind./m2) and larvae (108.5 ind./m2). In August, the sea surface temperature had reached the optimal limits for spawning of warm-water fish species, with the maximum number of eggs of 70.8 ind./m2, and that of larvae of 67.7 ind./m2. In August 2023, the number of ichthyoplankton species in the coastal waters of Karadag (20 species), and on the shelf and in the deep-water areas of the study (18 species each), was quite comparable. Keywords : Fish eggs and larvae Species diversity Abundance and spatial distribution Hydrological regime