Native fish addition boosts productivity in biofloc aquaponics: full analysis

A newly published study in Animals suggests that adding yellowtail lambari, a native South American fish, to a biofloc-based aquaponic system with Nile tilapia and lettuce can improve nutrient retention and productivity. The article, published May 3, 2026, tested systems with and without lambari over 35 days in eight experimental units, positioning species diversification as a practical lever for improving output in intensive aquaculture systems. (mdpi.com)

The idea didn’t emerge in a vacuum. Aquaponics has long leaned heavily on tilapia and catfish, but researchers have been looking for alternative species that better fit local markets, regional ecology, and production goals. A 2021 review in Aquaculture International identified yellowtail lambari among the South American species suited for aquaponics, while earlier “FLOCponics” work with tilapia and lettuce highlighted both the promise and the management challenges of coupling biofloc fish culture with plant production, especially around nutrient balance and solids handling. (hero.epa.gov)

In this new study, Jatobá and colleagues evaluated whether including lambari alongside tilapia could make better use of nutrients already circulating in the system. The abstract indicates the treatment compared co-culture systems with and without lambari while producing head lettuce, with nutrient retention and productivity as core outcomes. Although the full paper was not directly retrievable through the publisher during search, the indexed article record confirms the design, species, publication details, and the study’s central conclusion that native fish inclusion promoted both nutrient retention and productivity. (mdpi.com)

That finding is consistent with adjacent research from the same field. Recent aquaponics and integrated aquaculture studies have shown that species combinations and system design can materially affect nutrient transformation, feed-use efficiency, and retained nitrogen and phosphorus. Separate work involving yellowtail lambari in integrated systems has also suggested that adding complementary species can improve nitrogen-use efficiency, which helps explain why a lambari-tilapia combination might perform better than a simpler setup. This is an inference from related studies, not a direct claim from the new paper, but it fits the broader evidence base. (mdpi.com)

Direct outside commentary on this specific paper appears limited so far, likely because it was published very recently. Still, the broader industry and academic conversation has been moving toward diversification, especially in regions where tilapia may not be the only or best commercial fit. Reviews of South American aquaponics candidates have argued that native species can support market diversification and improve adoption when matched to local conditions, rather than forcing a one-species model across very different production environments. (hero.epa.gov)

Why it matters: For veterinarians, fish health consultants, and aquatic animal specialists, the study is useful because it frames productivity as a function of biological design, not just feed or hardware. Multi-species systems can change waste pathways, suspended solids dynamics, competition, and water quality, all of which affect fish welfare and disease risk. If native species inclusion improves nutrient capture without compromising health, that could support more resilient production models. But it also means health oversight may need to account for species-specific behavior, stress tolerance, and pathogen management in mixed systems. (pmc.ncbi.nlm.nih.gov)

What to watch: The next step is validation beyond a 35-day experimental window, ideally with commercial-scale economics, longer health monitoring, and clearer operational guidance on stocking ratios and biofloc management. It will also be worth watching whether this work prompts more trials using native fish in aquaponics, especially in Latin American production systems looking to balance sustainability, market fit, and animal performance. (mdpi.com)