The AAFCO generic-vs-named-species distinction
Per AAFCO 2024 Official Publication ingredient definition 60.59, "fish meal" is defined as "the clean, dried, ground tissue of undecomposed whole fish or fish cuttings, either or both, with or without the extraction of part of the oil." The definition requires minimum 60 percent crude protein, maximum 12 percent moisture, and excludes mammalian, bird, and reptile materials. Crucially, the AAFCO definition does not require species disclosure for generic "fish meal" labeling. A pet-food brand can list "fish meal" on the ingredient panel without specifying which fish species the meal was derived from, leaving consumers and rubric-evaluators unable to verify supply-chain claims, contaminant-load predictions, or sustainability sourcing.
Named-species variants (salmon meal, herring meal, sardine meal, anchovy meal, menhaden meal, whitefish meal, mackerel meal, pollock meal) are defined under the same AAFCO 60.59 framework with the additional species-naming provisions per AAFCO 2024 species-specific subsections. When a brand lists a named-species variant, the supply-chain claim is verifiable through species-specific commercial fishery data per FAO 2023 + ICES 2024 + NOAA fishery statistics. Per the KibbleIQ rubric, this traceability difference is substantive enough to warrant scoring differentiation. See our peer explainers for salmon meal, and the marine-oil cluster on our salmon oil, herring oil, sardine oil, and anchovy oil explainers.
Source species and global supply chain
Per FAO 2023 (State of World Fisheries) global production data, the dominant species used in generic fish meal production are Peruvian anchoveta (Engraulis ringens, approximately 4–7 million tonnes annual catch depending on El Niño cycle), Atlantic herring (Clupea harengus), Atlantic menhaden (Brevoortia tyrannus, US Gulf and Mid-Atlantic), Gulf menhaden (Brevoortia patronus), capelin (Mallotus villosus, North Atlantic), blue whiting (Micromesistius poutassou), sand eel, jack mackerel, and various small pelagic species. The Peruvian anchoveta fishery alone represents approximately 20–30 percent of global fish meal production in non-El-Niño years.
Pet-food-grade fish meal supply is typically sourced from rendering plants integrated with industrial fish-meal production for aquaculture feed (the dominant end-use), human-food fish processing co-products, and direct industrial fishery harvest. Per Bourre 2003 (Reprod Nutr Dev) and standard fish-oil composition data, the residual EPA + DHA contribution in fish meal varies substantially by source species — salmon meal at 12–18 percent EPA + DHA of total fatty acids, anchoveta meal at 18–30 percent, menhaden meal at 15–25 percent. Generic "fish meal" without species disclosure leaves the marine omega-3 contribution unpredictable. The species-specific framework overlaps with our omega-3 fatty acids overview and individual marine-oil explainers.
Protein quality and digestibility
Per NRC 2006 Nutrient Requirements of Dogs and Cats and Hendriks 2007 (J Anim Sci) canine ileal digestibility work, fish meal protein quality is among the highest in commercial pet-food ingredient supply, with PDCAAS / DIAAS scores meeting or exceeding canine requirements across all essential amino acids. Crude protein content typically 60–72 percent on dry-matter basis depending on species and processing parameters. The amino acid profile is complete across all 10 amino acids canine essentiality requires, with lysine, methionine, and threonine particularly abundant relative to AAFCO 2024 canine maintenance minima.
Cats benefit similarly from fish meal per AAFCO 2024 feline nutrient profile, with additional considerations for taurine (fish meal contributes substantially through muscle tissue, addressed on our taurine explainer), arachidonic acid, and the obligate-carnivore amino acid framework. Histamine concerns arise specifically in feline diets — mishandled fish-meal supply can develop elevated biogenic amine content (histamine, putrescine, cadaverine) during inadequate cold-chain handling, which is a concern in scombroid-family species (mackerel, tuna) more than in smaller pelagic species. Quality-controlled fish-meal supply is screened for biogenic amine content per AAFCO and FDA-CVM standards.
Sustainability and the wild-capture footprint
The sustainability picture for generic fish meal is mixed and species-dependent. Peruvian anchoveta management has improved substantially since the 2008–2010 reforms enforcing quota systems, vessel monitoring, and bycatch reduction per IFFO (Marine Ingredients Organisation) and ICES 2024 stock assessments; the fishery is MSC-certified in segments. Atlantic menhaden management is more contested — some stocks have ASMFC (Atlantic States Marine Fisheries Commission) management plans in good standing, while the Chesapeake Bay menhaden fishery has been the subject of substantial ecological concern owing to forage-fish-cascade effects on striped bass and other predators.
The broader "fish in / fish out" framework measures wild-fish biomass extracted per kilogram of farmed fish or pet-food protein delivered. Industrial reduction fisheries (the species feeding fish-meal supply) currently extract approximately 1.4–2.0 kg wild biomass per kg fish-meal produced per IFFO 2024. Pet-food brands marketing "sustainable fish meal" should disclose source species and certification framework; brands using generic "fish meal" without disclosure should be evaluated case-by-case. The KibbleIQ rubric does not currently differentiate scoring based on fishery certification because supply-chain documentation is rarely transparent to consumers; it is a trust-signal consideration rather than a rubric-defined penalty. Sustainability framework context overlaps with our ASC aquaculture certification and plant protein sustainability LCA pages.
How KibbleIQ scores fish meal
The KibbleIQ Dry Kibble Rubric treats named-species fish meals (salmon meal, herring meal, sardine meal, anchovy meal, menhaden meal, whitefish meal, mackerel meal, pollock meal) as top-tier protein sources comparable to chicken meal and lamb meal. Generic "fish meal" without species disclosure receives a one-tier discount in the rubric because the supply-chain traceability, contaminant-load predictability, and EPA + DHA contribution estimation are all weakened by the species ambiguity. The rubric’s preference for named-species fish meal is consistent with its broader preference for named-species protein meals over generic "meat meal," "animal protein," or "by-product meal."
To check whether your dog’s food uses named-species fish meal or generic substitutes, paste the ingredient list into the KibbleIQ analyzer. For peer protein-meal context, see our salmon meal explainer, lamb meal explainer, beef meal explainer, chicken meal explainer, animal by-product meal explainer, and hydrolyzed protein explainer. For marine-oil context, see our salmon oil, herring oil, sardine oil, anchovy oil, krill oil, algae oil, cod liver oil, and omega-3 fatty acids explainers. For methodology context, see our published methodology.