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Florida Biology - Gainesville

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Bullfrog

Rana catesbeiana

 

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Rana_catesbeiana_adult - click to enlarge

HABITAT

These frogs are habitat generalists and can be found in lakes, ponds, sluggish portions of streams, slow rivers and man-made drainage ponds.

BREEDING SEASON

Spring/Fall, March-October

SIMILAR TADPOLES

Rana grylio, Rana sphenocephala, Rana clamitans

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Rana_catesbeiana_tadpole - click to enlarge

APPEARANCE

Head

Dorsal eyes.

Body

Rana catesbeiana tadpoles are extremely variable.  Typical coloration of Coastal Plain populations is olive green dorsally with an immaculate creamy yellow belly.  However, coloration can vary from grayish green to olive to brown and even bright green.

Tail

The body and tail may be completely covered with small black dots or the dots may be completely absent.  

APPROXIMATE MAXIMUM SIZE

Large: Over 4 inches, 100mm. May take 1-2 years to develop.

Rana_catesbeiana_tadpole_length

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URL: http://fl.biology.usgs.gov/armi/Guide_to_Tadpoles/species/rana_catesbeiana/rana_catesbeiana.html
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Page Last Modified: Friday, 14-Dec-2012 12:57:37 EST