Sidomma SD-FN3 Fillet Knife
- Fillet Knife
- 3
- Plastic
- Black-Blue
A 3 blade fillet set spanning 5 to 7 inches with sheaths included, backed by a strong 4.6 rating, a practical pick for processing fish of different sizes.
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How it ranks among the 74 fillet knifes we track
4.6★ across 151 Amazon ratings, Bayesian-smoothed toward the category average.
151 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
50+ bought on Amazon last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 74 fillet knifes we track - how the scorecard works · full fillet knifes data report. Confidence: medium - useful but incomplete evidence.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
The Sidomma SD-FN3 is a 3 piece fillet knife set with 5, 6 and 7 inch blades, each paired with a sheath, rated 4.6 stars across 151 reviews and 50 recent buyers.
The set covers three blade lengths in one purchase, letting anglers match knife size to the fish being cleaned rather than relying on a single length for everything. Handles are plastic, and each knife ships with its own sheath for storage and safe transport.
- 3 piece fillet knife set
- Blade lengths of 5, 6 and 7 inches
- Sheath included for each knife
- 4.6 rating from 151 reviews, 50 bought in the past month
Who it's for
Anglers and home cooks who clean fish of varying sizes and want one set covering small panfish through larger catches. Less useful for someone who only ever needs a single fixed blade length.
Strengths and trade-offs
Drawn from this product's published specifications.
- Three blade lengths in one set, 5, 6 and 7 inches
- Each knife includes its own sheath
- Strong 4.6 rating across 151 reviews
- Plastic handles rather than a premium material
- Three knives to maintain and store instead of one
Performance notes
Three blade lengths let the shorter 5 inch blade handle detail work on smaller fish while the 7 inch blade covers larger cuts, a common approach in fillet knife sets. The included sheaths protect the edges between uses and make the set safer to store or transport.
Specifications
| Brand | Sidomma |
|---|---|
| Model | SD-FN3 |
| Pieces | 3 |
| Material | Plastic |
| Color | Black-Blue |
| Length | 12.8 inches |
| Special | Sheath |
Other Sidomma fillet knifes
How it compares
This product against the closest alternatives we track in fillet knifes.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| Sidomma SD-FN3 Fillet KnifeThis product | 4.6 / 5 | 151 | 4.0 / 5 |
| HOSHANHO 7 inch Fillet KnifeHOSHANHO | 4.7 / 5 | 3,900 | 4.5 / 5 |
| BUBBA 1095705 Fillet KnifeBubba | 4.7 / 5 | 6,300 | 4.4 / 5 |
| KastKing Fishing Knives-3 Fillet KnifeKastKing | 4.6 / 5 | 2,700 | 4.4 / 5 |
| Rapala BPFNF6SH1 Fillet KnifeRapala | 4.7 / 5 | 2,300 | 4.3 / 5 |
Similar fillet knifes from other brands
Questions about the Sidomma SD-FN3
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
How many knives come in the Sidomma SD-FN3 set?
Three, with 5, 6 and 7 inch blades.
Do the knives come with sheaths?
Yes, a sheath is included per knife per the listing.
What are the handles made from?
Plastic, per the listed material.