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Figure 8 | BMC Evolutionary Biology

Figure 8

From: Diversity, phylogenetic distribution, and origins of venomous catfishes

Figure 8

The distinctive venom delivery apparatus of a doradid catfish. Rather than forming longitudinal bundles along the spine, as in other siluroid catfishes, the glandular tissue in doradids is found in macroscopically visible aggregations between the posterior serrae of the fin spine. Abbreviations: s = pectoral spine, ps = posterior serrae, gt = glandular tissue.

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