Letter No 01 : egg and the egg development in killies Letter No 02 : the resting killifish embryo Letter No 03 : Cynolebias whitei Letter No 04 : Cynopoecilus - Cynolebias - (Leptolebias) Letter No 05 : killing hydra in rain forest tanks Lowering the pH to less than 5.0 does the trick. Fish and invertebrates not affected. Also, Scheel lists what fish he has to send eggs from; about a dozen or so species. Letter No 06 : the blue gularis Letter No 07 : Pterolebias Letter No 08 Epiplatys bifasciatus Letter No 09 : Aphyosemion labarrei Letter No 10 : Aphyosemion cognatum Letter No 11 : killing hydra II (tanks with peat and peatmoss) Letter No 12 :the balanced aquarium Letter No 13 Copper against Oodinium in stocks of Nothobranchius

Letter No 14 : more crossings in Aphyosemion Also: Cynolebias (Cynopoecilus) melanotaenia "The Fighting Gaucho" Letter No 15 : a black male Cynolebias whitei Letter No 16 : the genus Aphyosemion Letter No 17 : resting eggs Letter No 18 : recent crossings Letter No 19 : the genus Nothobranchius Letter No 20 : general information on peat Letter No 21 : Nothobranchius melanospilus http://img.kil.palo-alto.ca.us/m/MEP/Mbezi/00-0-Copr_2018-WEJM_Costax.png Letter No 22 : resting eggs in Aphyosemion filamentosum Letter No 23 : Nothobranchius palmquisti Letter No 24 : The genus Oryzias Letter No 25 : sending of eggs Letter No 26 : The Genus Aplocheilus