Here you will find the Spanish fishing manuals published by each region’s government so that you can check out the different kinds of fish you will find there, what you’re not allowed to fish, minimum sizes, etc. They’re all in Spanish.
Canary Islands
Canary Islands minimum fish size tables: Below you will find links for minimum sizes, regulated by the Canary Islands government, the Spanish government, and the European Union.
https://www.gobiernodecanarias.org/pesca/temas/tallas_minimas/normativa_nacional.html
RedPROMAR User Tool
If you want to know more about the type of plants and fish that you can find in the ocean around the Canaries, check out this useful tool called RedPROMAR. Information on their site and mobile apps is updated often by divers, swimmers, and anyone who wishes to help. You can add photos and location data of where you saw a specific type of fish, plant, or even bird. You can also download images of different fish, the protected species, and also a few Spanish fishing manuals and posters. If you visit any of the fishing offices in the Canaries, you will find these posters on the walls inside.
Click here to go to the Play store to download the RedPROMAR app
Click here to go to the App Store to download the RedPROMAR app
Balearic Islands
Government of Baleares Fishing Manual: Balearic_Islands_fishing_manual
Euskadi (Basque Country)
This Spanish fishing manual is also written in their local language Euskera. Click here to read it: Folleto_pesca_recreativa
Minimum Size Limits for Spain
This website has nice photos with minimum fish sizes. If you’re doing catch and release, you have nothing to worry about. It’s only if you want to eat the fish (or use it as live bait, where it is allowed), you must pay attention. Each fish has a table, with the different fishing regions. Click here to check it out