Decoding Mercadona's Fish Counter: What Do the Box Colors Mean?

Madrid, Spain – A recent viral video by online trainer and dietitian Esperanza HealthyLife has shed light on a common consumer query regarding fish sold at Mercadona supermarkets. In the video, HealthyLife explains the distinction between fish presented in blue and green boxes, a detail she claims 90% of her Instagram followers were unaware of. According to HealthyLife, fish found in blue boxes originates from fish farms. This type of fish is distributed uniformly to all Mercadona centers, with stores unable to select specific varieties. In contrast, fish displayed in green boxes is described as "de la lonja," meaning it comes directly from the fish market. HealthyLife emphasizes that this fish is the freshest and most natural option available. She further notes that individual Mercadona stores have the autonomy to choose which specific types of fish from the market they wish to stock, often based on local preferences or best-selling varieties. The video has sparked discussion among viewers, with some current and former fishmongers offering additional insights and clarifications on the nuances of fish sourcing and labeling, suggesting that the color of the box might not always be the sole indicator of origin or type. Consumers are encouraged to consult store staff or product labels for detailed information.