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While the lives of fish are generally governed by the same instincts, whatever the species or environment, behaviours differ and so do fishing approaches. Beyond the pleasure of the catch, the specificities of each species and the resulting fishing approaches are always an opportunity to learn and progress.
Different environments
Each species lives in one or more specific environments. Tracking a wide variety of fish means understanding the internal logic of each environment and ecosystem. A stream, a river, a lake, an estuary or even the open sea have different operating logics and particularities of their own. To take this a step further, two seemingly similar environments can function in very different ways. Multiplying the number of fishing zones, especially if they are structurally different, can only be a source of progress.
But while fishing them requires specific approaches, the skills you acquire will be no less cross-disciplinary. Indeed, the knowledge you'll acquire on how to place a trout in the water veins of a torrent will undoubtedly enable you one day to catch sea bass in an estuary faster than any other angler.
Different behaviors
Each species has its own specific behavior in terms of habitat, migration, behaviour and feeding. Some are pelagic, others benthic; tuna will hunt for food, while carp will "gather" their food.
While I've deliberately chosen two species with very specific and distinct behaviours, a number of them have multiple behaviours that are similar in several respects. So what you can learn about the behaviour of white fish in freshwater can be reinvested on the seashore to track gilthead bream.
Different techniques
The above two points lead to particular approaches and therefore specific techniques that you need to master. It's obvious that fishing black-bass with a rubber jig in the cover won't help you on a school of mackerel, but the day you go to the Amazon to stalk the aimara, you'll be surprised at the effectiveness of a soft lure skippered under the foliage. In the same way, every trick you pick up while surface fishing for sea bass will prove effective on pike or trevally in similar situations.
