Complex sentence: The first hall mostly contains freshwater species such as Rudd and European Eels, as well as species involved in various conservation projects and captive-breeding programmes, such as Broad Sea Fans, Seahorses and Spiny Starfish.
Split into simpler sentences: The first hall mostly contains freshwater species, as well as species involved in various conservation projects and captive-breeding programmes. These include Rudd, European Eels, Broad Sea Fans, Seahorses and Spiny Starfish.