Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Exotic animal husbandry > Fish > Flashcards

Fish Flashcards

1
Q

What 6 factors are required to maintain water quality?

A 
Correct stocking density
Filtration system
Aeration
Monitor temperatures
Regular cleaning and partial water changes
Regular water quality testing
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

How long does a fish need to be quarantined for, before it is added to existing stock?

A

4 weeks

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is the relative amount of oxygen in water compared to air? What is the danger of this?

A

5%

Can easily fall to hypoxic levels

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What concentration of DO is required by most fish?

A

6mg/L

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

When are the dissolved levels of carbon dioxide highest?

A

Just before dawn

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is the danger of keeping fish in plastic bags for long periods?

A

High levels of carbon dioxide develops.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What nitrogenous compound is excreted from the gills and kidneys of fish?

A

NH3 - ammonia

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What does bacteria convert NH3 to?

A

Nitrite - NO2-

Nitrate - (NO3)2-

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Which nitrogenous compounds are very toxic to fish?

A

Ammonia and nitrite

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is the optimum level of ammonia?

A

0mg/L

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is the optimum level of nitrite?

A

0mg/L

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is the optimum level of nitrate?

A

<50mg/L

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

How is new tank syndrome prevented?

A

Bacteria needs to be fully established in the filter before the fish are added.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Which bacteria are required to seed the filter? What is their function?

A

Nitromonas - oxidises NH4.

Nitrobacter - oxidises NO2-

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is the process of filter maturation called?

A

Cycling

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

How can the process of cycling a filter be sped up?

A

Seed the filter with part mature media.
Use concentrated bacteria
Use hardy “seed fish” - this can be an ethical issue because some may not survive.

17
Q

What needs to be monitored when cycling a filter.

A

Water parameters to determine when more stock can be added.

Addition of new fish increases NH3 and requires more bacteria to grow.

Nitrate levels are controlled via plants and regular water changes.

Excessive nitrate = excessive plant growth = reduced DO

18
Q

What is the optimum temperature range of a goldfish?

A

2-40 c

19
Q

What is determined by the temperature of the environment?

A

Metabolic, feeding and growth rates.

20
Q

How does an increase in temperature affect the amount of DO?

A

Decreased dissolved oxygen

21
Q

What is the optimum pH for fish?

A

6-8

22
Q

How can the salinity of the tank be maintained? What concentration?

A

Use pure salt (sodium chloride)

2-6g/L

23
Q

Why is larger tank beneficial?

A

More stable water quality

24
Q

Where should a tank be positioned?

A

Away from direct sunlight, draughts, room heaters

25
Q

Why is artificial lighting preferred?

A

It can be controlled

26
Q

What are the types of filters?

A

Mechanical and biological

27
Q

Where should a pond be positioned?

A

Open area in the sun for most of the day.
Shade from midday and shelter from the winter winds.
Away from trees and overhanging bushes.
On level ground to avoid run-off.
Access to water and electricity.

28
Q

Why are UV lamps used in ponds?

A

To kill single-celled algae and other micro-organisms.

29
Q

What is the function of a pump?

A

Helps with water movement and aeration

30
Q

At what temperature does cold water float above warm water?

A

4c

31
Q

How deep should outdoor ponds be?

A

> 1m

32
Q

How should fish be fed?

A

2-4x a day, with as much food consumed in 2-3 minutes.

Remove uneaten food.

33
Q

How should fish be fed in a well planted pond?

A

Summer: 2-4x a day, with as much food consumed in 2-3 minutes.
Remove uneaten food.

Single feed during daylight as temperatures decrease.

No feed when water <8c

Exotic animal husbandry (1 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions