Chapter 31 - Fish Flashcards
(10 cards)
The release of eggs and sperm by fish is called _____.
spawning
What is the typical quarantine interval for fish upon arrival?
30 days
Name two methods for identification of fish.
Subcutaneous dye injections, tags, fin clipping, transponders, recording individual markings.
What level of lighting is normally required for aquariums?
Relatively low light
What anatomical feature allows fish to extract oxygen from water?
Gills
What are the three types of tank holding systems?
Closed (static), flow-through, recirculating.
What is water hardness?
A measure of the calcium and magnesium ions in the water.
What element do fish need in the water to breathe?
Dissolved oxygen
True or False
Fish eat only a herbivorous diet.
False
Some fish are carnivorous.
What is generally the optimal pH range of a fish tank?
pH 6 - 8
