Video summary

EPP 6 AFA Term 1 Week 4 - Requirements for Natural Fish Raising

Main summary

Key takeaways

Educational

Main Ideas / Lessons Conveyed

  1. Fish Culture (Fish Farming)

    • Fish culture is the process of raising desirable fish species in captivity while managing their environment to improve growth and reproduction.
    • Related concepts:
      • Fish cultivation: rearing fish under controlled or semi-controlled conditions.
      • Fish propagation: increasing fish life through natural or artificial reproduction.
      • Fish conservation: scientific utilization of fish and other fishery aquatic resources.

  2. Classification of Fish Culture

    • By extent of financial investment
      • Intensive: limited area, very high investment, high production.
      • Extensive: wide area, minimal capital, very low production.
      • Semi-intensive: uses some or most modern production techniques.
    • By purpose
      • Commerce/business
      • Recreation/enjoyment
      • Educational/cultural/scientific pursuit
      • Food production
    • By design
      • Natural pond
      • Artificial pond
    • By state of water
      • Still water
      • Running water
    • By salinity
      • Fresh water
      • Brackish water
      • Marine/salt water
    • By temperature
      • Warm/hot water
      • Cold water
    • By species raised
      • Freshwater species
      • Brackishwater species
      • Marine/saltwater species

  3. Key Terminology in Fish Culture

    • Endemic/indigenous: native to the locality.
    • Exotic/digenous: introduced from other countries.
    • Habitat: where plants/animals naturally live and grow.

Feeding types

  - **Herbivorous**: feed on plants/vegetables only.
  - **Carnivorous**: feed on other animals.
  - **Omnivorous**: feed on both plants and animals.

Environmental / biological terms

  - **Tide**: periodic rise and fall of sea water.
  - **Milt**: male reproductive gland of fish.
  - **pH**: hydrogen ion concentration of water.
  - **Photosynthesis**: plants make food using sunlight.
  - **Predators**: fish that feed on other (especially cultivable) fish.
  - **Prolific**: producing many young in great numbers.
  - **Sabalo/l (spawner reference)**: “bangus breeder or spawner.”
  - **Salinity**: degree of saltiness/freshness of water.
  - **Temperature**: degree of coldness/hotness.
  - **Competition**: rivalry for food/space/oxygen in a pond.
  - **Cannibalistic**: eating their own kind.
  - **Plankton**: microscopic plants and animals found on/near the water surface.
  - **Spat**: free-swimming larvae of oysters and mussels.
  - **Catadromous**: go from **fresh water to salt water** to spawn (example: **eels**).
  - **Anadromous**: go from **salt water to fresh water** to spawn (example: **bangus**).

Reproduction types

  - **Oviparous**: eggs fertilized and develop outside the body (example: **tilapia**).
  - **Viviparous**: living young; early development nourished by the mother.
  - **Ovoviviparous**: eggs develop within the body; young are born alive without nourishment from mother (example: **rays and sharks**).

Other terms

  - **Food chain**: sequence of eating/being eaten.
  - **Scavengers**: feed on decaying organic matter.
  - **Lab-lab**: greenish/brown/yellowish crust of microbenthic organisms on pond floor.
  - **Fecundity**: number of eggs laid by a female in one spawning.
  - **Standing crop**: total number of fish stocked in a given area/time.
  - **Biomass**: total amount of animal life in the environment.

  1. Fish Pond Facilities (Parts of a Fish Pond and Their Functions)

    • The pond system is described as multiple compartments, each with a specific role:

      • Nursery pond: smallest/cleanest; fry to pre-fingerling.
      • Transition pond: fish mature from pre-fingerling to post-fingerling; also called stunting pond.
      • Rearing pond: largest; post-fingerling to market size.
      • Breeding pond: houses spawners to produce fry.
      • Catching pond: catchment basin for fish harvest.
      • Head pond: water reservoir before distributing to other compartments.
      • Water supply canal: supplies water throughout the system.

    • Pond terminology/labels (as mentioned for a legend):

      • NP: nursery pond
      • FP: formation pond
      • RP: rearing pond
      • SC: supply canal

  2. Dikes and Gates

    • Kinds of dikes
      • Main dikes: surround the entire fish pond project.
      • Secondary dikes: surround the biggest compartments.
      • Tertiary dikes: surround the smallest compartments.
    • Kinds of gates
      • Main gate: largest; water entrance for whole pond system.
      • Secondary gate: found in the largest compartment.
      • Tertiary gate: found in the smallest compartment.

  3. Commonly Cultured Fish and Crustaceans (Examples)

    • Species listed with local and scientific names:
      • Dalag (Mudfish / Murrel): Ophicephalus striatus
      • Hito (Freshwater catfish): Clarias batrachus
      • Martiniko (Climbing perch): Anabas testudineus
      • Biya (Goby): Glossogobius giuris
      • Ayungin (Therapon): Therapon plumbeus
      • Bangus (Milkfish): Chanos chanos
      • Karpa (Common carp): Cyprinus carpio
      • Tilapia: Oreochromis niloticus, Oreochromis zillii, Oreochromis mossambicus
      • Gourami (giant gourami): Osphronemus gourami
      • Pla salid: Trichogaster pectoralis
      • Alimango (Mud crab): Scylla serrata
      • Alimasag (Blue crab): Neptunus pelagicus
      • Sugpo (Jumbo tiger prawn): Penaeus monodon

  4. Activity / Task Mentioned

    • Students work in groups to create a 3D model using recyclable materials of commonly cultured fish and crustaceans:
      • Group 1: 3D models of native fishes
      • Group 2: 3D models of exotic fishes
      • Group 3: crustaceans

  5. “Requirements for Natural Fish Raising” (Assessment Items)

    • Identification prompts (likely for matching/labeling) include:
      • Fish that feed on decaying organic matter (scavengers)
      • Native to their locality (endemic/indigenous)
      • Introduced by other countries (exotic/digenous)
      • Place where plants and animals grow naturally (habitat)
      • Fish that feed on plants and vegetables only (herbivorous)
      • Fish that feed on other animals (carnivorous)
      • Fish that go upstream from saltwater to freshwater to spawn (anadromous)
      • Free-swimming larvae of oysters and mussels (spat)
      • Fish that go downstream from freshwater to saltwater to spawn (catadromous)
      • Minute plants/animals on water surface (plankton)

Methodology / Instruction Lists (As Presented)

A) Matching / Answering Tasks (As Described in Subtitles)

Task 1: Fish Raisers in the Philippines

  • Match Column A to Column B using listed fish/farm/locations.

Column A items include

  1. Sex-reversed tilapia production
  2. Jam Dynasty Fish Farm
  3. Bangus grower from Ozamiz City
  4. New Green Fish
  5. Largest goldfish farm

Column B options

  • A. Jean Gonzales
  • B. Joel Sims
  • C. Mike Co
  • D. Robert Patines
  • E. Odette Lim

Task 2: Fish Visibility in Community Market

  • Complete a table by listing fish categories based on frequency in the community market:
    • Column 1: fish always seen in the community market
    • Column 2: fish sometimes seen
    • Column 3: fish seldom seen

Task 3: Classification by Purpose

  • Identify the correct classification of pictures according to purpose:
    • Commerce/business
    • Recreation/enjoyment
    • Educational/cultural/scientific pursuit
    • Food production

Task 4: Identification Items for Natural Fish Raising

  • Use boxes as a guide to write answers for prompts such as:
    • decaying organic matter feeder
    • native to locality
    • introduced by other countries
    • place where plants/animals naturally live
    • plant-only fish
    • other-animals fish
    • upstream-from-salt-to-fresh to spawn
    • oyster/mussel free-swimming larvae
    • downstream-from-fresh-to-salt to spawn
    • minute plants/animals on water surface

B) Group Activity (3D Model Creation)

  • Work with your group to create a 3D model of commonly cultured fish and crustaceans using recyclable materials found in your community.
  • Assignments:
    • Group 1: native fishes
    • Group 2: exotic fishes
    • Group 3: crustaceans

Speakers / Sources Featured

  • No specific speaker names are provided; the subtitles mainly present instructional content and quiz options.
  • Named individuals appear only as quiz options:
    • Jean Gonzales
    • Joel Sims
    • Mike Co
    • Robert Patines
    • Odette Lim

Original video