20 Questions
Which of the following is a licensed anaesthetic for fish in the UK and USA?
MS-222
Which anaesthetic is fat soluble and may result in slower recovery in older and fatter fish?
MS-222
Which anaesthetic is poorly soluble in water and needs to be diluted in ethanol before use?
Clove Oil
Which anaesthetic can be administered through injection intramuscularly?
Medetomidine and Ketamine
Which heavy metal becomes dissolved in soft water conditions and is lethal to fish at levels of 0.015mg/L?
Copper
What is the recommended temperature range for tropical fish?
23-26C
What is the recommended temperature range for cool-water fish such as koi carp and goldfish?
17-21C
What should be examined when conducting an in-depth exam of a fish?
All of the above
Which of the following is NOT a method for monitoring the depth of anesthesia in fish?
Using pulse oximetry
What is the recommended flow rate for anesthesia water to trickle through the gills of a fish?
Around 1-3 L/minute/kg
Which imaging technique can be used to examine fish in water without the need for coupling gel?
Ultrasound
What is the main difficulty with interpreting images obtained through endoscopy in fish?
There is limited information available on 'normal' values
Which of the following is a correct statement about salinity and specific gravity?
Salinity can be measured using a refractometer or a hydrometer.
What is the range of salinity for true sea water?
35ppt
Which of the following is a correct statement about salinity in freshwater fish?
NaCl at 2-3ppt can help osmoregulation in freshwater fish.
How can hyposalinity be used in marine systems?
To control the parasite Cryptocaryon irritans.
Which of the following is true about ammonia levels in freshwater systems?
The equilibrium between unionized ammonia and ammonium ions is pushed to the left when the pH is more alkaline.
Which of the following is true about nitrite levels?
Catfish from the Genus Ictalurus are highly sensitive to nitrite.
Which of the following is true about nitrate levels in marine systems?
Nitrate is less toxic to fish than ammonia.
Which of the following is true about chlorine and chloramine levels in tap water?
Chloramine is a combination of chlorine and ammonia.
Test your knowledge on heavy metal levels in water with this quiz! Learn about the potential risks of iron, lead, and copper leaching from metal pipework into ponds and houses. Discover the lethal levels for fish and how to check for heavy metals using colorimetric methods.
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