Fish Feeding Habits Flashcards
1
Q
Fish feeding habits are opportunistic. What does this mean?
A
- depends on opportunity for food
2
Q
Define herbivore
A
- eat plant material
3
Q
What is the disadvantage of eating plants?
A
- less energy/nutrient dense = need to eat more
4
Q
Are any cartilaginous fish herbivores?
A
no
5
Q
What percent of bony fish are herbivores?
A
<5%
6
Q
What feeding habits do browsers have?
A
- selective, eat only plant
7
Q
What feeding habits do grazers have?
A
- less selective, plants and sediments (bulk feeders)
8
Q
Define detritivore
A
- organic plant material (decomposing)
9
Q
What percent of fish species are detritivores?
A
5-10%
10
Q
Define omnivores
A
- feed on animal or plant matter
11
Q
What does it mean that omnivores have a prevalence for carnivory?
A
- given the chance; animal > plant (gets all nutrients it needs)
12
Q
Define carnivores
A
- eat other animals
**ALL LARVAL FISH ARE CARNIVORES (feed on zooplankton)
13
Q
What are the feeding habits of suspension feeders (2)
A
- suction
- ram
14
Q
What are the feeding habits of benthic invertebrate feeders (4)
A
- graspers
- pickers
- sorters
- crushers
15
Q
How do sorters eat?
A
- spit things out they don’t want to swallow
16
Q
How do crushers feed?
A
- break shells of shellfish
17
Q
What are the feeding habits of piscivores? (4)
A
- fish as prey
- active pursuit
- stalking
- ambush
18
Q
What are the feeding habits of scavangers?
A
- find dead animals
