H

  • Hapa: A small net-pen-like structure installed inside a pond, used for acclimation, experiments, or holding broodstock.

  • Hardness (Total): The concentration of calcium and magnesium ions in the water, important for the shrimp's exoskeleton formation.

  • Harvesting: The act of gathering (removing) the animals from the pond or tank for sale. Can be total or partial.

  • Hatchery: A facility dedicated to producing post-larvae (shrimp) or fry/fingerlings (fish) from broodstock and eggs.

  • Hatching: The moment the eggs rupture, releasing the larvae.

  • Hemolymph: The "blood" of shrimp.

  • Hepatopancreas (HP): A vital organ in shrimp, responsible for digestion, nutrient absorption, energy storage, and immune defense. Its color and appearance are health indicators.

  • Heterotrophic: A system (like BFT) dominated by microorganisms (bacteria) that consume organic matter and an external carbon source (e.g., molasses).

  • Histology: The microscopic analysis of tissues to diagnose diseases.

  • Hormone (Reversal): Used in tilapia hatchery to induce sex reversal, producing all-male populations (which grow faster).

  • Hypoxia: A condition of low dissolved oxygen levels in the water, causing stress or mortality.