Texas Aquaculture Facility Operator License Practice Exam | TPWD & TDA Verified Q&A with Rationales

Texas Aquaculture Facility Operator Lice
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nse Practice Exam Questions And Correct
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Answers (Verified Answers) Plus b b b b




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1. What is the optimal pH range for most freshwater aquaculture species
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in Texas? b




A. 4.0–5.0
B. 5.5–6.0
C. 6.5–9.0
D. 9.5–11.0

A pH range of 6.5 to 9.0 ensures optimal metabolic and physiological functio
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n for most aquaculture species.
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2. Which agency regulates aquaculture permits in Texas?
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A. Texas Department of Agriculture
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B. Texas Parks and Wildlife Department
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C. Environmental Protection Agency b b



D. Texas Department of Health Services
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,TPWD oversees permits, species importation, and aquatic species health in
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Texas aquaculture.
b




3. What is the major nitrogenous waste excreted by fish?
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A. Nitrite
B. Nitrate
C. Carbon dioxide b



D. Ammonia

Ammonia is excreted by fish and must be managed to prevent toxicity.
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4. Which filtration method is primarily used to remove solid waste from r
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ecirculating systems? b




A. Mechanical filtration b



B. Biological filtration b



C. Chemical filtration b



D. Reverse osmosis b




Mechanical filtration traps solid particles and debris from the water.
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5. A common method to reduce dissolved oxygen levels at night is:
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A. Turn off all pumps
b b b



B. Use aerators continuously
b b



C. Drain the pond partially
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D. Increase fish density b b




Aerators maintain dissolved oxygen, especially during nighttime respiration
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peaks.
b

, 6. Which of the following is a warmwater species commonly farmed in T
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exas?

A. Rainbow trout b



B. Channel catfish b



C. Arctic charb



D. Sockeye salmon b




Channel catfish thrive in Texas’s warm waters and are economically import
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ant.



7. What is the primary function of biofilters in recirculating aquaculture s
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ystems?

A. Reduce temperature b



B. Convert ammonia to nitrate
b b b



C. Add oxygen
b



D. Kill pathogens
b




Biofilters host nitrifying bacteria that convert toxic ammonia to less harmful
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nitrate.
b




8. What is the term for a disease that spreads from fish to humans?
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A. Mycosis
B. Zoonosis
C. Phagocytosis
D. Parasitism

, Zoonotic diseases can be transmitted between fish and humans, such as cert
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ain bacterial infections.
b b




9. When transporting fish, the most critical factor to monitor is:
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A. Color
B. Fin size b



C. Dissolved oxygen b



D. Feed intake b




Oxygen levels can quickly deplete in transport containers, leading to stress
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or death.
b




10. What is a Secchi disk used to measure?
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A. Salinity
B. Water clarity (turbidity)
b b



C. Oxygen saturation b



D. pH level b




A Secchi disk estimates water transparency to help assess plankton density and
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pond health. b




11. Which of the following is a potential invasive aquaculture
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species in Texas? b b




A. Bluegill
B. Rainbow trout b



C. Tilapia
D. Largemouth bass b