AAAQ1043 (202301 session) | Baamboozle - Baamboozle

TWO effects of high temperature on fish.

Increase growth rate, food requirements and food conversion efficiency. Stimulating fish gonad maturation and spawning activity. Increase oxygen demand.

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Inshore vs offshore

Inshore = near or toward the coast; Off shore = away from the coast

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thief

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gift

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banana

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heart

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Explain daily fluctuation of oxygen levels in the pond.

From sunrise to sunset: photosynthesis increases the DO level. At night: respiration reduces the DO content until sunrise.

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Optimum range of DO for fish.

> 5 mg/L

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List 3 basic physical-chemical parameters

Temperature, DO, pH, salinity, alkalinity, water hardness, turbidity, Ammonia, nitrite, nitrate

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Explain nitrification process.

Ammonia - Nitrite (NItrosomonas bacteria); Nitrite - Nitrate (Nitrobacter bacteria)

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Effect of low pH.

Reduces enzyme activity and metabolic processes in fish. Can cause gill irritation and mucus buildup, affecting oxygen uptake.

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Current vs wave

Current = Continuous movement of water in one direction; Wave = surface movement of water

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lifesaver

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What is TAN?

Ammonia, NH3; Ammonium ion, NH4+

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Give 2 effects of low temperature on fish.

decreasing/stopping food intake. reducing the growth of juveniles and older fish. delaying/preventing maturation and spawning. slowing down the egg development.

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