Scientific Extension & Best Practices

FOAB Aquaculture Knowledge Hub

Curated technical guidelines, pond chemistry benchmarks, and biosecurity protocols developed by fisheries scientists and experienced commercial farmers to maximize yields safely.

Pond Water Chemistry Reference Benchmarks

Scientific extension reference ranges for commercial freshwater grow-out ponds in Bangladesh.

Educational & Extension Notice: The water parameters below represent general aquaculture extension benchmarks synthesized from Department of Fisheries (DoF) and Bangladesh Fisheries Research Institute (BFRI) publications. They are provided as educational observations and do not constitute prescriptive chemical treatments or statutory FOAB regulations. Always confirm local pond conditions with an accredited fisheries extension officer.

Parameter	Optimal Range	Observation Alert	Field Observation Guidance	Extension Reference
Dissolved Oxygen (DO)	5.0 – 8.0 mg/L	< 3.0 mg/L (Observation Alert)	Standard aeration practices; verify with field titration or calibrated optical probe.	DoF Extension Manual Reference
Pond pH	7.5 – 8.5	< 6.5 or > 9.2	Routine buffering with agricultural lime; consult local fisheries extension officer before large chemical applications.	BFRI Aquaculture Compendium
Total Ammonia Nitrogen (TAN)	< 0.05 mg/L (Un-ionized NH3)	> 0.2 mg/L	Review feeding rates and increase surface water circulation; observe fish surface-gasping behavior.	National Aquaculture Guidelines Reference
Total Alkalinity	100 – 180 mg/L (as CaCO3)	< 50 mg/L	Dolomite or calcium carbonate application based on soil pH testing; peer baseline observation.	DoF Freshwater Handbook

WATER QUALITY6 min read

Dissolved Oxygen Dynamics in Semi-Intensive Carp Ponds

A field discussion on calculating biological oxygen demand (BOD), aerator positioning, and pre-dawn aeration strategies during monsoon humidity spikes.

By FOAB Technical Extension Panel (Draft Review)Related Policy Docs

BIOSECURITY8 min read

Biosecurity Practices and Antimicrobial Stewardship in Aquaculture

Why routine prophylactic antibiotic use induces antimicrobial resistance and risks export quality. Peer-tested alternatives for nursery pond biosecurity.

By FOAB Biosecurity Working Group (Draft Review)Related Policy Docs

FEEDING5 min read

Extruded Floating Feed Management and Feed Efficiency

Techniques for calculating feeding rates based on seasonal water temperature changes and maintaining high feed efficiency in commercial carps.

By Commercial Aquaculture Advisory GroupRelated Policy Docs

NURSERY7 min read

Nursery Pond Conditioning & Fry Acclimatization Before Release

Liming, fertilization, predator netting, and temperature equalizing observations to support healthy fingerling survival rates.

By Secretariat Extension Documentation TeamRelated Policy Docs

Facing an Active Pond Health or Water Crisis?

Registered members can open a fish pathology ticket directly with FOAB technical officers.