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9 terms

Biology Perch

STUDY
PLAY
Swim bladder
* buoyancy
lateral line
sensory
operculum
covers gills
scales
protection and tells age
two chambered heart
* pumps hemalymph
endoskeleton
support
fins for movement
dorsal, pelvic, pectoral, anal, and caudal
gonads
determine sex (female - 1) (male - 2)
how many things does it have?
12