title: Retinal twin cones or retinal double cones in fish: misnomer or different morphological forms?
abstract: Scanning retinal electronmicroscopy studies demonstrated the presence of both twin cones (two identical cones adhered together) and double cones (two non-identical cones adhered together) in the retinae of the major forms of fish, which included actinopterygi, elasmobranch, and teleosts. The complexity of these visual cells in the retinae of different groups of fishes was revealed for the first time and reflected on the diversities of functions of the fish retina in general.
authors.affiliation: Department of Anatomy, Institute of Cell Biology, Zhejiang University, Hangzhou, China.
authors.forename: Marong
authors.initials: M
authors.lastname: Fang
authors.forename: Jicheng
authors.initials: J
authors.lastname: Li
authors.forename: S M
authors.initials: SM
authors.lastname: Wai
authors.forename: W H
authors.initials: WH
authors.lastname: Kwong
authors.forename: L S
authors.initials: LS
authors.lastname: Kung
authors.forename: D T
authors.initials: DT
authors.lastname: Yew
mesh_terms: D000818:Animals; D005399:Fishes / Q000033:anatomy & histology*; D012160:Retina / Q000648:ultrastructure*; D017949:Retinal Cone Photoreceptor Cells / Q000648:ultrastructure*; D012754:Sharks / Q000033:anatomy & histology; D013045:Species Specificity