Morphology in perch affects habitat specific feeding efficiency

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Habitat structure, feeding mode and morphological reversibility: factors influencing phenotypic plasticity in perch (2005, background): “Furthermore, perch usually go through two ontogenetic niche shifts during their life (Persson, 1988) where each niche favours a distinct morphology (Svanbäck and Eklöv, 2003, 2004), and we therefore expected that perch might display a reversible plastic morphology as a response to the trade-offs in…”
Genetic variation and phenotypic plasticity: Causes of morphological and dietary variation in Eurasian perch (2006, background): “The pelagic perch, on the other hand, are superior foragers on pelagic prey types in open water environments ( Svanback and Eklov, 2003, 2004 ).”
The ecological causes of individual specialisation. (2011, background): “…is usually associated with functional trade-offs, where the use of different resources by a single individual is constrained by functional morphology, cognitive ability or digestive ability (Persson 1985; Afik & Karasov 1995; Robinson 2000; Svanbäck & Eklöv 2003, 2004; Olsson et al. 2007).”