# Fish - Stage 4 (technology) internal name `fish-mk04` · tier 6 (pY science pack 3, [tier 6](https://factorio.kalzumeus.com/tier/6.md)) HTML page: https://factorio.kalzumeus.com/tech/fish-mk04/ ## Cost 900 units of (1 × [pY science pack 3](https://factorio.kalzumeus.com/item/py-science-pack-3.md), 2 × [Chemical science pack](https://factorio.kalzumeus.com/item/chemical-science-pack.md), 3 × [pY science pack 2](https://factorio.kalzumeus.com/item/py-science-pack-2.md), 6 × [Logistic science pack](https://factorio.kalzumeus.com/item/logistic-science-pack.md), 10 × [pY science pack 1](https://factorio.kalzumeus.com/item/py-science-pack-1.md), 20 × [Automation science pack](https://factorio.kalzumeus.com/item/automation-science-pack.md)), 180 s each. ## Requires (1) - [pY science pack](https://factorio.kalzumeus.com/tech/py-science-pack-3.md) ## Leads to (1) - [Water invertebrates - Stage 4](https://factorio.kalzumeus.com/tech/water-invertebrates-mk04.md) ## Unlocks (5 recipes) ### Fish (`breed-fish-4`) - 85 s · tier 6 · productivity modules allowed - Ingredients: 10 × [Fish eggs](https://factorio.kalzumeus.com/item/fish-egg.md), 60 × [Oxygen](https://factorio.kalzumeus.com/fluid/oxygen.md), 3 × [Lamp](https://factorio.kalzumeus.com/item/small-lamp.md), 10 × [Biomass](https://factorio.kalzumeus.com/item/biomass.md), 100 × [Saline water](https://factorio.kalzumeus.com/fluid/water-saline.md), 1 × [Fish food](https://factorio.kalzumeus.com/item/fish-food-01.md), 2 × [Filtration media](https://factorio.kalzumeus.com/item/filtration-media.md), 20 × [Seaweed](https://factorio.kalzumeus.com/item/seaweed.md), 1 × [Deluxe fish food](https://factorio.kalzumeus.com/item/fish-food-02.md) - Results: 100 × [Wastewater](https://factorio.kalzumeus.com/fluid/waste-water.md), 40 × [Fish](https://factorio.kalzumeus.com/item/fish.md) - Made in: Fish farm MK 01, Fish farm MK 01, Fish farm MK 02, Fish farm MK 02, Fish farm MK 03, Fish farm MK 03, Fish farm MK 04, Fish farm MK 04 - Unlocked by: [Fish - Stage 4](https://factorio.kalzumeus.com/tech/fish-mk04.md) ### Fish eggs (`breed-fish-egg-4`) - 55 s · tier 6 · productivity modules allowed - Ingredients: 12 × [Fish](https://factorio.kalzumeus.com/item/fish.md), 50 × [Phytoplankton](https://factorio.kalzumeus.com/fluid/phytoplankton.md), 100 × [Saline water](https://factorio.kalzumeus.com/fluid/water-saline.md), 1 × [Fish food](https://factorio.kalzumeus.com/item/fish-food-01.md), 2 × [Filtration media](https://factorio.kalzumeus.com/item/filtration-media.md), 20 × [Seaweed](https://factorio.kalzumeus.com/item/seaweed.md), 1 × [Deluxe fish food](https://factorio.kalzumeus.com/item/fish-food-02.md) - Results: 100 × [Wastewater](https://factorio.kalzumeus.com/fluid/waste-water.md), 45 × [Fish eggs](https://factorio.kalzumeus.com/item/fish-egg.md) - Made in: Fish farm MK 01, Fish farm MK 01, Fish farm MK 02, Fish farm MK 02, Fish farm MK 03, Fish farm MK 03, Fish farm MK 04, Fish farm MK 04 - Unlocked by: [Fish - Stage 4](https://factorio.kalzumeus.com/tech/fish-mk04.md) ### Phase 4 fish egg collection program (`fish-egg-mk04-breeder`) - 80 s · tier 6 - Ingredients: 6 × [Fish MK 04](https://factorio.kalzumeus.com/item/fish-mk04.md), 15 × [Fishmeal](https://factorio.kalzumeus.com/item/fishmeal.md), 50 × [Phytoplankton](https://factorio.kalzumeus.com/fluid/phytoplankton.md), 100 × [Saline water](https://factorio.kalzumeus.com/fluid/water-saline.md) - Results: 10 × [Fish eggs MK 04](https://factorio.kalzumeus.com/item/fish-egg-mk04.md), 1 × [Fish eggs MK 04](https://factorio.kalzumeus.com/item/fish-egg-mk04.md) (50% chance of 2), 1 × [Fish eggs MK 03](https://factorio.kalzumeus.com/item/fish-egg-mk03.md) (50% chance of 2), 100 × [Wastewater](https://factorio.kalzumeus.com/fluid/waste-water.md) - Made in: Fish farm MK 01, Fish farm MK 01, Fish farm MK 02, Fish farm MK 02, Fish farm MK 03, Fish farm MK 03, Fish farm MK 04, Fish farm MK 04 - Unlocked by: [Fish - Stage 4](https://factorio.kalzumeus.com/tech/fish-mk04.md) ### Phase 4 fish breeding program (`fish-mk04`) - 30 s · tier 6 - Ingredients: 20 × [Fish MK 03](https://factorio.kalzumeus.com/item/fish-mk03.md), 3 × [Deluxe fish food](https://factorio.kalzumeus.com/item/fish-food-02.md), 1 × [Great alien sample](https://factorio.kalzumeus.com/item/alien-sample-03.md), 5 × [Filtration media](https://factorio.kalzumeus.com/item/filtration-media.md), 10 × [Seaweed](https://factorio.kalzumeus.com/item/seaweed.md), 60 × [Phytoplankton](https://factorio.kalzumeus.com/fluid/phytoplankton.md) - Results: 0.003 × [Fish MK 04](https://factorio.kalzumeus.com/item/fish-mk04.md) (0.3% chance), 7 × [Fish](https://factorio.kalzumeus.com/item/fish.md) (70% chance of 10) - Made in: Fish farm MK 01, Fish farm MK 01, Fish farm MK 02, Fish farm MK 02, Fish farm MK 03, Fish farm MK 03, Fish farm MK 04, Fish farm MK 04 - Unlocked by: [Fish - Stage 4](https://factorio.kalzumeus.com/tech/fish-mk04.md) ### Phase 4 fish cultivation program (`fish-mk04-breeder`) - 80 s · tier 6 - Ingredients: 10 × [Fish eggs MK 04](https://factorio.kalzumeus.com/item/fish-egg-mk04.md), 5 × [Lamp](https://factorio.kalzumeus.com/item/small-lamp.md), 5 × [Filtration media](https://factorio.kalzumeus.com/item/filtration-media.md), 2 × [Great alien sample](https://factorio.kalzumeus.com/item/alien-sample-03.md), 100 × [Saline water](https://factorio.kalzumeus.com/fluid/water-saline.md), 40 × [Fish emulsion](https://factorio.kalzumeus.com/fluid/fish-emulsion.md) - Results: 6 × [Fish MK 04](https://factorio.kalzumeus.com/item/fish-mk04.md), 0.5 × [Fish MK 04](https://factorio.kalzumeus.com/item/fish-mk04.md) (25% chance of 2), 1.5 × [Fish MK 03](https://factorio.kalzumeus.com/item/fish-mk03.md) (75% chance of 2), 100 × [Wastewater](https://factorio.kalzumeus.com/fluid/waste-water.md) - Made in: Fish farm MK 01, Fish farm MK 01, Fish farm MK 02, Fish farm MK 02, Fish farm MK 03, Fish farm MK 03, Fish farm MK 04, Fish farm MK 04 - Unlocked by: [Fish - Stage 4](https://factorio.kalzumeus.com/tech/fish-mk04.md)