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The effect of the preserver on the length‐weight relationship and condition factor were estimated using 50 specimens of Tlaloc labialis; a small stream fish from the Grijalva River basin, México. They were measured at different stages of preservation: freshly collected, fixed in 10% formalin and preserved in 70% ethanol for over a 2 years period. All fish decreased in weight and condition factor,...
A new species of Profundulus, Profundulus portillorum, from the Honduran central highlands is described. Profundulus portillorum belongs to the Profundulus labialis species group and is distinct from the Profundulus punctatus species group in that it lacks a humeral spot and less than half of the caudal fin is scaled. Within the P. labialis species group, P. portillorum has a more slender body, smaller...
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