Stumpbody Sarotherodon aureus (Steindachner) (=Tilapia aurea) and tail‐less S. niloticus (L.) (=T. niloticd): two vertebral anomalies and their effects on body length

Abstract
Two gross phenotypic anomalies in tilapia are described: Stumpbody Sarotherodon aureus (=Tilapia aurea) and tail‐less S. niloticus (= T, nilotica). Vertebral anomalies associated with each disorder are described. A body length: vertebra length ratio is developed to assess the effects that vertebral anomalies have on body lengths. The Stumpbody phenotype is a non‐heritable, congenital defect.