Biol. 452: FISH SPECIMEN PHOTOS

FISH SPECIMEN PHOTOGRAPHS - PART 1

Biol. 452 - VERT. NATURAL HISTORY

K. Petersen's Home Page Biol. 452 Home Page

Fish Photos - Part 2

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"Agnatha"

Order Myxini
Family Myxinidae

Hagfish
Adult, whole body.
Mouth with barbels.
Note tiny slime gland openings in skin along lower 1/3 of body.

Order Petromyzontiformes
Family Petromyzontidae

Lamprey
Adult, whole body.
Disk mouth with keratinized teeth.
Juveniles showing dorsal & caudal fins, large eyes. Pineal eye shows up as white spot in upper specimen.

Chondrichthyes

Order Squaliformes
Family Squalidae

Dogfish Sharks
Dorsal view shows the 2 dorsal fins & heterocercal tail.
Ventral view of embryo showing egg sac; This group is ovoviviparous.

Nose has been bent downward in this shark as a result of storage. Light shows the roughness of skin from microscopic placoid scales.

Order Carcharhiniformes
Family Sphyrnidae

Hammerhead Sharks

Dorsal view of head

Ventral view showing mouth & gill slits. 1 of the nostrils is visible above eye in lower left

.
Lateral view of body.

Order Torpediniformes
Family Torpedinidae

Torpedo Rays

plus skate egg case

Dorsal & ventral views of juvenile torpedo rays.

Closeup of torpedo ray tail.
Family Rajidae - Oviparous; view of empty skate egg case.

Order Rajiformes
Family Rajidae

Skates
Dorsal view of embryonic skate; egg sac removed.
Closeup of skate tail.
Ventral view of embryonic skate; egg sac removed.

Order Chimaeriformes
Family Chimaeridae

Ratfish
Lateral view of body.
Dorsal & ventral views.
Lateral view of skull & lower jaw

Actinopterygii (Non-Teleosts)

Order Acipenseriformes
Family Acipenseridae

Sturgeon
Dorsal view shows bony scutes.
Lateral view shows heterocercal tail.
Ventral view shows barbels anterior to ventral mouth.

Order Semionotiformes
Family Lepisosteidae

Gar
Lateral view of body.

Lateral view of head showing long, slender rostrum.
Lateral view of posterior body showing the modified heterocercal tail.

Order Amiiformes
Family Amiidae

Bowfin
Lateral view of body.
Lateral view of shorter, wider head.
Lateral view of posterior body showing its modified heterocercal tail.

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Order Myxini Family Myxinidae Hagfish	Adult, whole body.	Mouth with barbels.	Note tiny slime gland openings in skin along lower 1/3 of body.
Order Petromyzontiformes Family Petromyzontidae Lamprey	Adult, whole body.	Disk mouth with keratinized teeth.	Juveniles showing dorsal & caudal fins, large eyes. Pineal eye shows up as white spot in upper specimen.

Order Squaliformes Family Squalidae Dogfish Sharks	Dorsal view shows the 2 dorsal fins & heterocercal tail.	Ventral view of embryo showing egg sac; This group is ovoviviparous.	Nose has been bent downward in this shark as a result of storage. Light shows the roughness of skin from microscopic placoid scales.
Order Carcharhiniformes Family Sphyrnidae Hammerhead Sharks	Dorsal view of head	Ventral view showing mouth & gill slits. 1 of the nostrils is visible above eye in lower left .	Lateral view of body.
Order Torpediniformes Family Torpedinidae Torpedo Rays plus skate egg case	Dorsal & ventral views of juvenile torpedo rays.	Closeup of torpedo ray tail.	Family Rajidae - Oviparous; view of empty skate egg case.
Order Rajiformes Family Rajidae Skates	Dorsal view of embryonic skate; egg sac removed.	Closeup of skate tail.	Ventral view of embryonic skate; egg sac removed.
Order Chimaeriformes Family Chimaeridae Ratfish	Lateral view of body.	Dorsal & ventral views.	Lateral view of skull & lower jaw

Order Acipenseriformes Family Acipenseridae Sturgeon	Dorsal view shows bony scutes.	Lateral view shows heterocercal tail.	Ventral view shows barbels anterior to ventral mouth.
Order Semionotiformes Family Lepisosteidae Gar	Lateral view of body.	Lateral view of head showing long, slender rostrum.	Lateral view of posterior body showing the modified heterocercal tail.
Order Amiiformes Family Amiidae Bowfin	Lateral view of body.	Lateral view of shorter, wider head.	Lateral view of posterior body showing its modified heterocercal tail.