Lips

MouthsGarJaw

Elephant Fish

Superior

Terminal

Inferior

Superior

Anglerfish

Terminal

Inferior

Fancier Jaws

Patenia

Remora

Teeth

Incisors- Sharks, piranhaPeriphyton

Cardiform/Villiform Teeth

CanineTeeth

Teeth

Molariform

Villiform

Incisors

Incisors

Incisors

Incisors

Incisors

Incisors

Canine

Canine

Molariform

Bat Ray

In general…• If you have to bite something off:

Incisors• If you have to hold something that

really struggles: Canines• If you have to hold inverts:

Cardiform/villiform• If you have to crush something

hard: Molariform

Pharyngeal Teeth!

PharyngealTeeth

ToothPad

Phytoplankton

Mollusks

Fish

Mollusk Soft Snails

PharyngealTeeth

Cichlids

Freshwater Drum

Gill RakersA fish that eats big food

A fish that eats medium food

A planktivorous Fish

Stomachs

Stomach

Esophogus Intestine

Eats other fish

Marine fish

FreshwaterOmnivore “J”

Stomachs

Stomach

IntestineEsophagus

Planktivore

Gizzard-Like Stomach

Parts of the Stomach

Cardiac StomachSecretes Pepsin/HCl

Fundic StomachMuscular for Grinding

Cookie Cutter Shark

Candiru

Vampire fish, Candiru, (Vandellia cirrhosa)

•Slender, nearly transparent, a few centimeters in length

•Can burrow through the body wall of fish and have been found in the body cavity.

•Parasitic, entering the gill chambers of larger fish, erecting a series of spines to hold them into place, and feeding off blood from the gill filaments for a minute or two

•Rarely, in the Amazon, Vandellia accidentally enter the urethra of humans urinating in the water. Even more rarely, the anus and vagina have been reported to serve as suitable orifices. Apparently, the urine is mistaken for urea given off in low quantity by fish gills.

•Surgical removal of the catfish is necessary. (1973, Urology 1: 265-267)