Environmental Conditions and procedures, and General anatomy

Question 1

What are the FDA approved anesthetic agents used in fish?

Answer 1

MS222 / Tricaine methanesulfonate

Question 2

What is the food withdrawal period mandatory by the FDA when using MS222 anesthetics on a fish?

Answer 2

21 days

Question 3

Where to take blood in a fish?

Answer 3

Caudal vein or cardiac bleeding

Question 4

What are the different types of swim bladders?

Answer 4

• Physoclistous: not connected to GI tract, regulated by tissues and glands
• Physostomous: connected to GI tract, Fish “gulp air” and expel air through mouth

Question 5

What is the Alpha Marine micro 4 vaccine effective against?

Answer 5

- Furunculosis (Aeromonas salmonida) and Vibrio spp.
- Designed for Lumpfish

Question 6

What is the purpose of the lateral line?

Answer 6

• Sensory function, detects movement and vibrations
• Spatial awareness
• Ability to navigate
• Orientation, predatory behavior, defense

Question 7

What are the functions of otoliths in fish?

Answer 7

• Ear stones
• Used for gravity, direction, sound detection
• Can be used to age fish

Question 8

How does blood travel in fish?

Answer 8

• From the heart, to the gills, then to the body and back to the heart