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An incubation trough (or hatching trough) is a device used in aquaculture for incubating fish eggs, mainly those of species with non-adhesive eggs (e.g., salmonids, carp, catfish, etc.).
General Description
An incubation trough (or hatching trough) is a device used in aquaculture for incubating fish eggs, especially species with non-adhesive eggs (e.g., salmonids, carp, catfish).
It is an elongated tank or channel with a constant water flow, ensuring:
-
adequate oxygenation of the eggs,
-
removal of metabolic wastes and empty shells,
-
and stable physical and thermal conditions.
Hatching troughs
An incubation trough (or hatching trough) is a device used in aquaculture for incubating fish eggs, mainly those of species with non-adhesive eggs (e.g., salmonids, carp, catfish, etc.).
General Description
An incubation trough (or hatching trough) is a device used in aquaculture for incubating fish eggs, especially species with non-adhesive eggs (e.g., salmonids, carp, catfish).
It is an elongated tank or channel with a constant water flow, ensuring:
-
adequate oxygenation of the eggs,
-
removal of metabolic wastes and empty shells,
-
and stable physical and thermal conditions.
€0.00
Tax included
High-quality FRP incubation trough for the incubation and first feeding stage of salmonids, including perforated baskets with standard 2 mm holes, vertical and inclined screens, 50 mm overflow pipe with handle, and stainless steel fittings.
| Models | Reference | Number of clays | Capacity | Flowrate | Lenght - Width - Height | Weight (kg) |
| 1 | C0010100 | 2 | 20.000 / 14.000 (*) | 6-10l/min. | 1480 - 590 -190 | 16.0 |
| 2 | C0010200 | 4 | 40.000 / 28.000 (*) | 8-12 l/min. | 2330 - 590 - 190 | 28.0 |
| 3 | C0010300 | 7 | 70.000 / 49.000 (*) | 8-12 l/min. | 4000 - 590 - 190 | 53.0 |
| 4 | C0011100 | Bare hatching trough for 2 clay | 1480 - 590 - 180 | 8.5 | ||
| 5 | C0011200 | Bare hatching trough for 4 clay | 2330 - 590 - 180 | 13.0 | ||
| 6 | C0011300 | Bare hatching trough for 7 clay | 4000- 590 - 180 | 28.0 | ||
| 7 | C0012100 | Bare clay | 580 - 500 - 180 | 3.0 | ||
| (*) Trout/salmon | ||||||
Design and Materials
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Material: Usually made of PVC, fiberglass, stainless steel, or painted concrete, depending on durability and cost.
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Typical dimensions:
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Length: 1–3 m
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Width: 20–40 cm
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Depth: 15–30 cm
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Slope: Slight (1–2%) to allow smooth water flow.
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Covers: Often used to protect eggs from direct light and predators.
Operation
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Water inlet at the head of the trough, regulated by a diffuser or small weir to distribute the flow evenly.
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Water circulation throughout the length:
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constant, moderate flow rate (0.2–1 L/s depending on species),
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stable temperature (typically 10–15 °C for salmonids).
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Water outlet at the downstream end, sometimes fitted with a screen to retain fry.
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Incubation trays or screens support the eggs, sometimes arranged in multiple stacked troughs.
Use and Management
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Eggs are disinfected (e.g., with iodophor) before incubation.
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Daily monitoring is required:
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removal of dead (white) eggs,
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control of flow rate, temperature, and oxygen levels.
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After hatching, larvae remain in the trough until the yolk sac is absorbed, then transferred to rearing tanks.
Advantages
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Excellent control of incubation conditions.
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Space-efficient (stackable troughs).
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Easy egg and fry handling.
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Reduced loss from clogging or oxygen deficiency.
Disadvantages
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Sensitive to fluctuations in water quality and flow.
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Requires frequent cleaning to prevent biofilm buildup.
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Dependent on a constant, clean water supply.
C0010100
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