Florida gar, Lepisosteus platyrhincus DeKay, were sampled in two canal systems in south Florida during 2000–2001 to estimate age, growth and mortality as part of the Everglades ecosystem‐restoration effort. Tamiami (C‐4) and L‐31W canal systems had direct connections to natural wetlands of the Everglades and harboured large Florida gar populations. Of 476 fish aged, maximum ages were 19 and 10 years for females and males, resp...

This study quantified the hypoxia tolerance of the Mayan cichlid Cichlasoma urophthalmus over a range of salinities. The species was very tolerant of hypoxia, using aquatic surface respiration (ASR) and buccal bubble holding when oxygen tensions dropped to c. 1·0 mg l −1 ) and 6 mmHg, respectively. Salinity had little effect on the hypoxia tolerance of C. urophthalmus , except that bubble holding was more frequent at the highe...

In this study, the hypoxia tolerance of three Everglades fishes, two native centrarchids ( Lepomis gulosus and Lepomis marginatus ) and a recently introduced cichlid ( Hemichromis letourneuxi ), were documented. Aquatic surface respiration (ASR) thresholds were lowest for H. letourneuxi , followed by L. gulosus , then L. marginatus . The ASR thresholds for L. marginatus were within ranges reported for small, freshwater tropica...