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Nothobranchius rachovii, the bluefin notho, is a species of freshwater annual killifish from Mozambique. [2] It can grow up to 6 cm (2.4"). [ 3 ] It is popular among killifish enthusiasts, who raise them from eggs in aquaria.
The word killifish is of uncertain origin, but is likely to have come from the Dutch kil for a kill (small stream). [4] Although killifish is sometimes used as an English equivalent to the taxonomical term Cyprinodontidae, this is only one of several families that are referred to as Killifish. Cyprinodontidae more specifically refers to the ...
The eggs are pale yellow, about 2 mm (0.08 in) in diameter, and strongly adhesive. During a spawning event, a female can deposit up to 740 eggs in separate clutches of 10 to 300 eggs at a time. [13] The eggs adhere to plants, algal mats, empty mussel shells, sand, or mud at sites that are reached by water only at high spring tides. [13]
This annual killifish inhabits ephemeral pools in semi-arid areas with scarce and erratic precipitations and have adapted to the routine drying of their environment by evolving desiccation-resistant eggs that can remain dormant in the dry mud for one and maybe more years by entering into diapause.
The mangrove rivulus or mangrove killifish, Kryptolebias marmoratus (syn. Rivulus marmoratus), [2] [3] is a species of killifish in the family Rivulidae.It lives in brackish and marine waters (less frequently in fresh water) along the coasts of Florida, through the Antilles, and along the eastern and northern Atlantic coasts of Mexico, Central America and South America (south to Brazil).
The Tanganyika killifish (Lamprichthys tanganicanus) is a species of poeciliid endemic to Lake Tanganyika, where it forms large schools, mainly close to rocky shores but also pelagically off shore. This species grows to a length of 15 centimetres (5.9 in) SL. It is an egglayer with external fertilization, and deposits its eggs in narrow crevices.
Fundulus zebrinus is a species of fish in the Fundulidae known by the common name plains killifish. It is native to North America, where it is distributed throughout the Mississippi River , Colorado River , and Rio Grande drainages, and other river systems; many of its occurrences represent introduced populations.
Chologaster cornuta, commonly named swampfish, ricefish, or riceditch killifish, is a freshwater fish of the family Amblyopsidae. It is the only living species of the genus Chologaster . It only lives in US rivers in the Atlantic Coastal Plain drainages, from southeast Virginia to central Georgia .