title: Chromosomes of the chocolate gourami: a cytogenetic anomaly.
abstract: The chocolate gourami, Sphaerichthys osphromonoides, has the lowest chromosome number reported for fishes, with 2n = 16 and n = 8. Other members of the family Belontiidae have somatic numbers of 42 to 48. Chromosome instability is demonstrated by the presence of somatic abnormalities and meiotic multivalents.
mesh_terms: D000818:Animals; D002869:Chromosome Aberrations; D002875:Chromosomes; D004171:Diploidy; D005260:Female; D005399:Fishes; D006238:Haploidy; D007621:Karyotyping; D008297:Male; D008540:Meiosis; D008938:Mitosis; D013045:Species Specificity; D013737:Testis / Q000166:cytology