Overview

PIT tags (Passive Integrated Transponder) are one of the most important tools in modern salmon research, hatchery management, smolt tracking, and returning adult salmon identification. Whether you are running a hatchery, conducting river or dam passage studies, or monitoring salmon survival and migration routes, PIT tags provide highly accurate individual identification that lasts for the entire life of the fish.

At DO RFID TAG Manufacturer, we supply a full range of FDX-B and HDX PIT tags designed specifically for juvenile and adult salmon. Our tags meet ISO standards, pass strict QC testing, and are available in all popular sizes used by research organizations worldwide.

Why Salmon Need PIT Tags

Salmon are migratory fish with complex life cycles. Accurate identification is crucial for:

• Smolt-to-Adult Return (SAR) tracking

• Hatchery release performance evaluation

• Fish ladder and dam passage monitoring

• River and stream survival analysis

• Genetic and population studies

• Wild vs hatchery salmon differentiation

Unlike visible tags or fin clipping, PIT tags provide:

• 100% individualized ID

• Permanent internal placement

• High read accuracy in both hatcheries and rivers

• Long-term reliability over years of migration

Recommended PIT Tag Sizes for Salmon

We provide all globally used sizes:

Juvenile Salmon (Smolts)

• 1.25 × 7 mm (FDX-B)

• 1.4 × 8 mm (FDX-B)

• 1.5 × 8 mm (FDX-B)

• 2 × 6 mm (FDX-B)

• 2 × 8 mm (FDX-B)

These smaller PIT tags ensure:

• Minimal impact on swimming performance

• Low stress implantation

• High retention rates

Adult Salmon

• 2 × 12 mm (FDX-B / HDX)

• 3 × 13 mm (FDX-B / HDX)

• 3.85 × 23 mm (FDX-B / HDX)

• 3.85 × 32 mm (FDX-B / HDX)

• 4 × 34 mm (FDX-B / HDX)

Benefits:

• Longer read range (especially HDX)

• Suitable for large adults returning from the ocean

• Ideal for fish ladder and river antenna systems

FDX-B vs HDX — Which Works Better for Salmon?

Summary:

• Juveniles → FDX-B

• Adults in rivers → HDX

Both formats are ISO-compliant and compatible with standard readers and antennas.

Applications of PIT Tags in Salmon Research

1. Hatchery Tracking

• Measure growth rate

• Monitor feeding performance

• Identify individuals in large populations

• Study survival from juvenile to release

2. Smolt Migration Tracking

• Understand smolt timing and pathways

• Detect fish at multiple monitoring stations

• Evaluate environmental impacts

3. Dam Passage & Fish Ladder Monitoring

HDX tags combined with large river antennas enable detection in:

• Rivers

• Fish ladders

• Bypass systems

• Marine return locations

4. Adult Salmon Return Monitoring

• Identify hatchery returns

• Measure reproductive success

• Study ocean survival

Technical Specifications

How PIT Tagging Improves Salmon Research Accuracy

• Avoids tag loss

• Provides years-long tracking

• Works in freshwater and saltwater

• Allows automated data collection

• Enables real-time monitoring systems

• Supports large population studies

Why Order Salmon PIT Tags from DO RFID TAG Manufacturer?

1. Full Size Availability

We manufacture every size used worldwide for salmon tracking, including:

• 1.25×7

• 1.4×8

• 1.5×8

• 2×6 / 2×8 / 2×10

• 2×12

• 3×13

• 3.85×23

• 3.85×32

• 4×34

2. FDX-B + HDX Chip Options

Supports all hatchery and river applications.

3. Industrial-Grade Bioglass

High retention, impact resistant, safe for fish.

4. Bulk Manufacturing Capacity

• MOQ 100 pcs

• Support 50,000–500,000 pcs monthly production

5. Custom Services

• Pre-encoding

• Custom packaging

• Needle/injector compatibility

• Testing certificates

6. Worldwide Shipping

Fast delivery to research institutes, hatcheries, and fisheries.

Salmon PIT Tag FAQ

Q1: What is the best PIT tag size for juvenile salmon?
1.25–1.5 × 8 mm FDX-B is ideal.

Q2: What size is best for adult salmon?
2×12 mm or larger, ideally HDX.

Q3: Are PIT tags safe for salmon?
Yes, all tags are biocompatible and widely used in standard research.

Q4: Will PIT tags affect swimming?
No, if size is chosen correctly.

Q5: Are FDX-B and HDX readers different?
Most professional readers support both.

Q6: Can you supply injectors and needles?
Yes, all needle sizes are available.

Q7: Can tags be pre-encoded with my own IDs?
Yes.

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• /how-to-implant-pit-tags/