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ZoventaBiotech

Species guide

Indian Major Carp (Rohu, Catla, Mrigal)

Labeo rohita, Catla catla, Cirrhinus mrigala

The backbone of Indian freshwater polyculture. Catla feed at the surface, rohu in the water column and mrigal at the bottom — which is why a floating-plus-sinking feed strategy reaches all three.

Optimal stocking
3,000–5,000per hectare
Maximum stocking
8,000per hectare
Optimal temperature
25–32degrees Celsius
Typical harvest size
800 g – 1.5 kg
Typical culture period
10–12 months
Feeding zone
All three zones: catla at the surface, rohu in the column, mrigal at the bottom

Water to aim for

Temperature
25–32 °C
Dissolved oxygen
5 mg/L or more
pH
7.0–8.5

Feeding by growth stage

General starting ranges, as a share of the fish's body weight each day. Adjust to appetite, water temperature and oxygen, and ask your advisor for your own pond.

  1. Fry to fingerling

    Fish size
    Up to 50 g
    Feed per day
    5–8% of body weight
    Meals per day
    4

    Feed

  2. Juvenile

    Fish size
    50–200 g
    Feed per day
    3–4% of body weight
    Meals per day
    3

    Feed

  3. Grow-out

    Fish size
    200–500 g
    Feed per day
    2.5–3% of body weight
    Meals per day
    2

    Feed

  4. Finishing

    Fish size
    Above 500 g
    Feed per day
    About 2% of body weight
    Meals per day
    2

    Feed

Floating and sinking feed together

Feed floating pellets first for catla and rohu, where you can watch how much they take, then a sinking feed for mrigal on the bottom. Split the two roughly in line with how much of your stocking is bottom feeders. A floating-only programme leaves mrigal short.

Good practice

  • Stock catla, rohu and mrigal at about 40:30:30, then adjust the mix for your local market.
  • Feed in the early morning and late evening, when dissolved oxygen is better.
  • Use feeding rings or fixed feeding spots so you can see what is eaten and what is left.
  • Cut the ration as the water cools in winter; fish eat much less below 22 °C.
  • Prepare the pond and build up natural food before stocking.
  • Check feed used against growth every few weeks; the FCR calculator makes it quick.

Mistakes to avoid

  • Overfeeding, which spoils the water before it grows fish.
  • Working out the ration without allowing for water temperature.
  • Giving no sinking feed to mrigal and other bottom feeders.
  • Skipping pond preparation and natural food development.
  • Keeping the same stocking ratio regardless of what sells locally.

Recommended products

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Work out feed for your indian pond

Enter your stock count and average weight to get a daily feeding rate adjusted for water temperature — or ask the advisor and it will do the calculation for you.

Open feed calculator