A) 35-40°C B) 5-10°C C) 26-30°C D) 10-15°C
A) Salmo salar B) Clarias gariepinus C) Cyprinus carpio D) Oncorhynchus mykiss
A) 20-30 fish/m² B) 100+ fish/m² C) 5-10 fish/m² D) 50-60 fish/m²
A) Zooplankton B) Commercial feed C) Algae D) Detritus
A) 5-10% B) 28-32% C) 40-45% D) 10-15%
A) Temperature B) Water clarity C) pH D) Dissolved oxygen
A) 4.0-5.0 B) 9.0-10.0 C) 6.5-8.5 D) 2.0-3.0
A) Columnaris B) Ichthyophthirius C) Tuberculosis D) Saprolignia
A) Overfeeding B) High stocking density C) Water quality management D) Ignoring water parameters
A) Never B) Daily C) Depending on nutrient levels D) Weekly
A) Reduce water temperature B) Decrease pH C) Increase dissolved oxygen D) Remove algae
A) 5+ kg B) 0.1-0.2 kg C) 2-3 kg D) 0.5-1 kg
A) Dynamite fishing B) Hook and line C) Electrofishing D) Seine netting
A) Plastic pond B) Concrete pond C) Earthen pond D) Glass pond
A) Attracts predators B) Decreases water quality C) Removes predators and competitors D) Increases algae growth
A) Reduce oxygen levels B) Increase water turbidity C) Improve gut health D) Kill bacteria
A) Decreases fish growth B) Increases disease outbreaks C) Maintains water quality D) Reduces feed efficiency
A) Increases oxygen levels B) Toxic to fish C) Reduces algae blooms D) Beneficial for growth
A) 1-1.5 meters B) 3+ meters C) 2.5 meters D) 0.5 meters
A) Adjust pH B) Decrease oxygen C) Increase salinity D) Remove algae
A) Lower cost B) Slower growth C) Balanced nutrition D) Less water pollution
A) Manual removal B) Increasing fish density C) Decreasing water depth D) Adding fertilizer
A) Determine the best feed B) Increase mortality C) Reduce growth rate D) Lower water quality
A) Air temperature B) Cloud cover C) Soil type D) Growth rate
A) Once a week B) 3-4 times per day C) Only at night D) Once a day
A) Clear water B) Fish swimming actively C) Fish gasping at the surface D) Algae bloom
A) Promote algae growth B) Reduce fish growth C) Prevent disease introduction D) Increase production costs
A) Reduce growth rate B) Promote cannibalism C) Increase disease transmission D) Separate fish by size
A) Increasing water depth B) Adding sugar C) Biological control D) Reducing aeration
A) Resource recycling B) Higher input costs C) Increased pollution D) Reduced productivity |