The conservation status of a group of organisms indicates whether the group still exists and how likely the group is to become extinct in the near future. Many factors are taken into account when assessing conservation status: not simply the number of individuals remaining, but the overall increase or decrease in the population over time, breeding success rates, and known threats. Various systems of conservation status are in use at international, multi-country, national and local levels, as well as for consumer use such as sustainable seafood advisory lists and certification. The two international systems are by the International Union for Conservation of Nature (IUCN) and The Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES).
The Black Sea sprat, Clupeonella cultriventris, is a small fish of the herring family, Clupeidae. It is found in the Black Sea and Sea of Azov and rivers of its basins: Danube, Dnister, Dnipro (Ukraine), Southern Bug, Don, Kuban. It has white-grey flesh and silver-grey scales. A typical size is 10 cm The life span is of up to 5 years. The peak of its spawning is in April and it can be found in enormous shoals in sea-shores, filled all-round coastal shallows, moving quickly back into the sea at a depth of 6–30 metres. Used for food; it has around 12% fat in flesh.
Tripterygion is a genus of fish in the family Tripterygiidae, the threefin blennies, the species of which are found in the north eastern Atlantic Ocean, the Mediterranean Sea and the Black Sea.
Alosa maeotica, known as the Black Sea shad or Azov shad, is a species of clupeid fish endemic to the Sea of Azov and the western part of the Black Sea basin. It is found in Bulgaria, Georgia, Moldova, Romania, Russia, Turkey, and Ukraine.
Proterorhinus marmoratus is a species of gobiid fish, a tubenose goby native to the brackish water parts of the Black Sea and the Sea of Azov, near the coasts of Bulgaria, Georgia, Romania, Ukraine and Russia. Also it is found in the Marmora Sea (Turkey). It can reach a length of 11.5 centimetres (4.5 in) TL.
Sander marinus, the estuarine perch, also called sea pikeperch or sea zander, is a species of ray-finned fish in the family Percidae which includes the perches, ruffes and darters. It is found in eastern Europe in the Black Sea and the Caspian Sea in Azerbaijan, Bulgaria, Iran, Kazakhstan, Moldova, Romania, Russia, Turkmenistan, and Ukraine. It lives in brackish water and rarely enters rivers.
An anchovy is a small, common forage fish of the family Engraulidae. Most species are found in marine waters, but several will enter brackish water, and some in South America are restricted to fresh water.
The mystery blenny is a species of combtooth blenny found in the eastern Atlantic ocean and the Mediterranean Sea. It is widespread in Madeira, the Canary Islands and Limbe, Cameroon, off Iberian Peninsula to all parts of the Mediterranean including Morocco, the Sea of Marmara, and Black Sea. In the Black Sea it was first found in 2002 near the southern coast of Crimea, Ukraine, and soon become abundant in coastal waters from Sevastopol to Cape Fiolent. It can reach a length of 5.8 centimetres (2.3 in) SL.
The flatsnout goby is a species of goby endemic to the Black Sea where it is mostly known from inshore waters amongst rocks and boulders. It is occasionally found offshore over areas with gravel substrates. This species can reach a length of 22.5 centimetres (8.9 in) TL.
The chestnut goby is a species of goby found in the Mediterranean and Black Sea. In the Black Sea it is found in the Gulf of Varna, saline lagoons near Abrau, also near Novorossiysk and Sochi. This species occurs in shallow, coastal waters. It can reach a length of 6.6 centimetres (2.6 in) SL.
The yellow triplefin ,> also known as the Abel's triplefin in South Africa, is a species of triplefin in the genus Enneapterygius. Males in this species can reach a maximum length of 2.5 centimetres. The blennies are generally bright yellow in colour, and males have black heads. They feed mostly on benthic invertebrates.
The black-faced blenny is a small benthic fish from the family Tripterygiidae (triplefin-blennies). It occurs at depths of 3 to 40 metres and lives on the substrate under large rocks, cliffs or other overhangs.
Tripterygion melanurum is a species of fish in the family Tripterygiidae, the threefin blennies. It is widespread in the Mediterranean Sea, where it occurs around the Balearic Islands and off the coasts of southern Sardinia, Algeria, Tunisia, Israel, Lebanon, Greece, Cyprus, and southern Turkey. It is a marine subtropical demersal fish measuring up to 5.3 centimetres (2.1 in) in length.
Tripterygion tartessicum is a species of fish in the family Tripterygiidae, the threefin blennies. It is widespread in the Mediterranean Sea and eastern Atlantic Ocean, where it occurs along the southern coast of Spain and from Morocco to Tunisia. It is a tropical demersal fish measuring up to 7.7 centimetres (3.0 in) in length.
Enneapterygius fasciatus, known commonly as the tiny threefin or the banded triplefin, is a species of triplefin blenny in the genus Enneapterygius. It was originally described by Weber in 1909, under the name Tripterygium fasciatum, which was later renamed Tripterygion fasciatum. It is a tropical blenny found in coral reefs in the Indian and western Pacific Oceans, and has been described from East Africa to Papua New Guinea, the Solomon Islands, and Taiwan. E. fasciatus has been recorded swimming at a depth range of 1–25 metres (3.3–82 ft). Male E. fasciatus can reach a maximum length of 3 centimetres.
Helcogramma trigloides, the scarf triplefin, is a species of triplefin blenny in the genus Helcogramma. It was described by Pieter Bleeker in 1858 as Tripterygion trigloides. This is a widespread species in the western Pacific Ocean.
The Japanese blacktail triplefin is a species of triplefin blenny in the genus Springerichthys. It was described by David Starr Jordan and John Otterbein Snyder in 1902. This species is found in the western Pacific Ocean from southern Japan to Taiwan. It feeds on algae and the adults occur in rock pools and just below the low water mark.
Steinitz's goby is a species of goby. It is native to the Mediterranean Sea near Marseilles. It has been recently recorded in the Adriatic Sea in Croatia, Tyrrhenian Sea in Italy, and in the Black Sea in Ukraine. This species can be found in underwater grottoes in inshore waters at depths of 2 to 15 metres. Steinitz's goby can reach a length of 3.8 centimetres (1.5 in) SL. Its name honours the marine biologist and herpetologist Heinz Steinitz (1909-1971) of the Hebrew University, Jerusalem.
Diplecogaster bimaculata, the two-spotted clingfish, is a species of fish in the family Gobiesocidae found in Black Sea, Mediterranean Sea and Atlantic Ocean where it is found on rocks and among seagrass or shell beds.
