In most habitats, adaptations are the single most obvious
aspects of an organisma (TM)s phenotype. However, the most obvious
feature of many subterranean animals are losses, not adaptations.
Even Darwin saw subterranean animals as degenerates: examples of
eyelessness and loss of structure in general. For him, the
explanation was a straightforward Lamarckian one, and one that did
not involve adaptation and the struggle of existence. This volume
is a comprehensive account of all known species of subterranean
fishes. It includes an extensive introduction, history of
investigations, consideration of non-stygobitic fishes in caves,
and detailed analysis of the conservation status of these very rare
animals.
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