Volume 24, Issue 1 – 05 June 2018 New Scientific publication – started delivery on July 25, 2018 Full Text | PDF (1,8 MB) Joseph C. Waddell and William G. R. Crampton: A simple procedure for assessing sex and gonadal maturation in gymnotiform electric fish, pp. 1-8 Abstract Studies of

First record of Laimosemion xiphidius (Huber 1979) (Cyprinodontiformes: Rivulidae) in Brazil The first record for the rivulid killifish Laimosemion xiphidius (Huber) for Brazil is presented. The species was recorded in a small tributary of the Oyapock River (Rio Oiapoque in Brazil), Amapá state, at the border with French Guyana. The

Volume 23, Issue 4 – 15 March 2018 New Scientific publication – started delivery on July 25, 2018 Full Text | PDF (2,4 MB) Dalton Tavares Bressane Nielsen, Mayler Martins, Luciano Medeiros de Araujo, Fabio Origuela de Lira and Amer Faour: Cynolebias akroa, a new species of annual fish (Cyprinodontiformes: