Among vertebrates, only teleostean fish species have appendages such as caeca at the gastrointestinal junction (Khanna, 1961; Romer, 1970; Kent, 1983). Although these gastrointestinal appendages are unique features of fish, they are present in only 60% of the known fish species (Khanna and Mehrota, 1971; Kapoor et al., 1975; Lagler et al., 1977; Stroband, 1980). The functional and adaptational significance of these structures in fish is of interest to ichthyologists.
ASJC Scopus subject areas
- Agricultural and Biological Sciences(all)