Wet Type Fish Feed Extruder
Pellet Size:
0.5-15 mm, covering all fish species & stages.
Floating & Sinking in One Machine:
One machine, both pellet types
CE & ISO Certified:
International quality & safety standards
Customizable Design:
Tailored to your recipe & requirements
Wide Capacity Range:
0.5-40 T/H–From small farms to industrial production
What is Wet Type Fish Feed Extruder?
Wet type fish feed extruder is the core equipment in the aquafeed industry for the large-scale production of high-quality floating/sinking fish feed.
Unlike dry-type extruders, wet-type fish feed extruders are equipped with a conditioner. Raw materials
enter the conditioner where steam and water are injected, and maturation, gelatinization and sterilization are completed under high temperature and high pressure.
This process gelatinizes starch and denatures protein, improving pellet stability and digestibilit. Meanwhile, it allows precise control of pellet density to produce qualified floating and sinking pellets. The materials are then extruded through the die holes and expanded by instant pressure release to form feed pellets.
Why Choose RICHI Wet Type Fish Feed Extruder?
For producing high-quality aquatic feed, the performance of the extruder is crucial. RICHI wet type fish feed extruder is equipped with an advanced steam conditioning system and stable extrusion molding technology, producing fish feed pellets with high maturity, firmness, and water resistance. The pellet density is adjustable, covering the needs of all fish species. This equipment is an excellent choice for producing high-end floating feed and achieving stable mass production.
Wet Type Fish Feed Extruder Specifications
Choose RICHI for reliable wet-type fish feed extrusion solutions. We supply single screw and twin screw wet type fish feed extruders with capacities from 0.5 to 12 tons per hour(standard models), designed for small farms up to large-scale aquafeed factories.
We provide fully customized solutions for you. According to your raw material formulas, feed types, pellet characteristics and plant layout, we offer suitable equipment configurations and complete production line designs.In this way, we help you build a stable, efficient and high-quality fish feed production system.
1. Wet-Type Single-Screw Fish Feed Extruder Machine Series
| Model | DSP-90B | DSP-135B |
| Main Power (kW) | 37 | 75 |
| Feeding Power (kW) | 7.5 | 7.5 |
| Conditioning Power (kW) | 1.1 | 2.2 |
| Cutting Power （kW） | 1.1 | 1.5 |
| Screw Diameter (mm） | 90 | 135 |
| Capacity (T/H) | 0.5-0.6 | 0.8-1.0 |
| Overall Dimension (mm) | 2600*1600*1900 | 3750*1980*1950 |
2. Wet-Type Dual-Screw Fish Feed Extruder Machine Series
| Model | SPHS75*2 | SPHS120*2 | SPHS150*2 | SPHS185*2 | |
| Capacity (T/H) | 0.5-1.0 | 1.5-2.0 | 3.0-4.0 | 5.0-6.0 | 10-12 |
| Main Power (kW) | 55 | 90 | 110 | 200 | 355 |
| Feeder Power (kW) | 1.5 | 1.5 | 1.5 | 1.5 | 2.2 |
| Conditioner Model | DC400-244 | DC500-244 | DC500-244 | DC600-300 | DC600-300 |
| Conditioner Power (kW) | 7.5 | 11 | 11 | 11 | 11 |
| Dual-Shaft Differential Conditioner Model | DC400*300-244 | DC500*400-300 | DC500*400-300 | DC600*500-300 | DC600*500-300 |
| Dual-Shaft Differential Conditioner Power (kW) | 11 | 11 | 11 | 15 | 15 |
| Screw Diameter (mm） | 75 | 120 | 120 | 150 | 185 |
Capacity varies depending on formulation, bulk density, and sinking/floating requirements. Customized screw configurations available.
Because RICHI’s technology is constantly being updated and iterated, we will continuously upgrade and innovate our equipment. Therefore, the specific equipment parameters are subject to the actual quotation. We will provide more professional customized design and production services for each customer.
How A Wet Type Fish Feed Extruder Works
The wet type fish feed extruder works by steam conditioning, high-pressure extrusion, and instant expansion.
Raw materials are mixed and treated with steam, then compressed and cooked under high temperature and pressure to improve gelatinization and digestibility. After passing through the die, the material expands into pellets, which are cut, dried, and cooled to ensure stable quality and good floating performance.
Versatile Applications for Various Aquatic Species
RICHI wet type fish feed extruder can process a wide variety of raw materials, including corn, soybean meal, fish meal, wheat bran, rapeseed meal, and various local grain by-products. Through steam conditioning and high-temperature extrusion, it produces floating, slow-sinking, or sinking pellets with stable quality. With strong formula adaptability and precise density control, it meets the diverse feed requirements of fish, shrimp, crabs, and even aquatic pet food production.
wheat
corn
soybean meal
fish meal
mineral additive
fish oil
catfish
tuna
tilapia
shrimp
crab
lobster
Global Customer Cases
RICHI wet type fish feed extruders have been successfully exported to many countries and regions across the globe. They are widely recognized for their high efficiency, stable output and excellent pellet quality, and highly praised by aquafeed producers worldwide.
Russia 5-6 T/H Wet Type Fish Feed Extruder Mill
We provided a Russian client with a complete cold-water fish feed production line, featuring a wet type fish feed extruder as the core equipment.
The line uses locally sourced raw materials such as fish meal and soybean meal, producing 0.5-6 mm sinking and slow-sinking pellets suitable for all growth stages.
Iran 1-2 T/H Floating Fish Feed Extruder Machine
This customer project adopts a fish and shrimp separate line strategy: it is equipped with a 1-2t/h wet type fish feed extruder specifically for floating fish feed, ensuring high pellet gelatinization and good water stability.
At the same time, it is equipped with a 10-12t/h shrimp feed pellet machine to meet high-yield demands.
Cote d’Ivoire 300-400 KG/H Fish Feed Extruder
With limited space and an initial investment, the customer chose our compact wet type fish feed extruder. This machine features a simple structure, a small footprint, and is easy to operate and maintain, making it ideal for small-sized start-ups.
Our equipment meets the feed needs for both juvenile and adult fish, helping the customer quickly enter the local market with a low initial investment.
Related Equipment for a Complete Fish Feed Production Line
A high-performance wet type fish feed extruder is just the beginning. RICHI Machinery provides all downstream and upstream equipment to build a seamless, automated fish feed plant. From raw material grinding to final bagging, we ensure every component works in perfect harmony.
01
Fish Feed Grinder
Our feed hammer mills offer ultra-fine grinding (80-200 mesh) essential for floating fish feed. Equipped with vibration sensors and permanent magnetic protection to ensure safe, continuous operation.
02
Liquid Adding Machine
Accurately adds oils, molasses, or other liquid nutrients, ensuring uniform mixing while enhancing pellet nutritional value and palatability.
03
Ribbon Feed Mixer
Achieve up to 98% mixing uniformity within 3-5 minutes. Ideal for blending base meals, fish oil, and premixes before entering the extruder.
04
Mesh Belt Dryer
Hot air circulates evenly through the pellet bed, removing moisture gently without causing cracks or surface hardening.
05
Fish Feed Cooler
Immediately after drying, our counterflow coolers use ambient air to gently reduce pellet temperature to near-ambient levels, preventing moisture regain and microbial growth.
06
Coating Machine
Our coating drums apply heat-sensitive ingredients (like probiotics or immunostimulants) after the cooling process, ensuring maximum efficacy.
07
Screening System
Double-deck screening ensures only uniform pellets reach the packaging stage. Fines are recycled back to the production process, reducing waste.
08
Packing System
Efficient, dust-free final packaging. High-precision load cells ensure accurate weight control (±0.1%).
09
Conveying System
Screw conveyors, belt conveyors, and elevators form a continuous material‑handling network, connecting all stages for efficient operation.
10
Steel Silo
Protects your ingredients from moisture, pests, and contamination. Our bolted or welded steel silos are designed for durability and easy installation.
When you choose RICHI for your entire fish feed production line, you eliminate compatibility issues. Our aqua feed machines are designed with standardized interfaces, centralized PLC control, and synchronized capacities. One order, one warranty, one service team – total peace of mind.
Frequently Asked Questions
Below are some questions you may have. If you have any inquiries, please feel free to contact us.
–
Can one wet type fish feed extruder machine produce both floating and sinking feed?
Yes. By adjusting screw configuration, die design, and process parameters, the same machine can produce floating, slow-sinking, or sinking pellets.
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What is the typical capacity range for RICHI wet type fish feed extruders?
Our wet type fish feed extruders range from 0.5 t/h to 12 t/h (standard models) for fish feed production. Custom solutions are available for higher capacities.
–
How long is the service life of wear parts (screw, ring die)?
With proper maintenance, our wear-resistant alloy steel components typically last 1000+ hours, depending on the abrasiveness of the raw materials.
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What equipment do I need except for the wet type fish feed extruder?
A complete fish feed production line includes: crusher – mixer –fish feed extruder machine– mesh belt type dryer → cooler → sprayer (optional) → screening machine → packaging scale. We offer all of these integrated units. Silos and conveying equipment are also available.
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Do you provide installation and commissioning?
Yes, we send engineers to your site for installation guidance, commissioning, and training your staff until they can operate the line independently.
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What is your warranty policy?
We offer a 12-month warranty on the main equipment (excluding wear parts). Spare parts are available year-round with fast shipping.
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Can I test my raw materials before purchasing?
Absolutely! We welcome customers to visit our factory for a trial run with their own raw materials, or we can arrange video trials.
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How much does a wet type fish feed extruder cost?
The price depends on capacity, configuration, and automation level. Please contact us with your requirements (capacity, target species, pellet type) for a customized quotation. (view our YouTube)
