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A tiny goby, Elacatinus, enters the LRT with the mudskipper

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Short one today.
Uncontroversial traditional nesting for the neon goby with another, larger goby, the mudskipper.

Figure 1. Elacatinus the neon goby, full scale on a 72 dpi monitor. ” data-medium-file=”https://pterosaurheresies.files.wordpress.com/2021/02/elactinus_cladogram588.jpg?w=300″ data-large-file=”https://pterosaurheresies.files.wordpress.com/2021/02/elactinus_cladogram588.jpg?w=584″ class=”size-full wp-image-53248″ src=”https://pterosaurheresies.files.wordpress.com/2021/02/elactinus_cladogram588.jpg?w=584&h=294″ alt=”Figure 1. Elacatinus the neon goby, full scale on a 72 dpi monitor. ” width=”584″ height=”294″ srcset=”https://pterosaurheresies.files.wordpress.com/2021/02/elactinus_cladogram588.jpg?w=584&h=294 584w, https://pterosaurheresies.files.wordpress.com/2021/02/elactinus_cladogram588.jpg?w=150&h=76 150w, https://pterosaurheresies.files.wordpress.com/2021/02/elactinus_cladogram588.jpg?w=300&h=151 300w, https://pterosaurheresies.files.wordpress.com/2021/02/elactinus_cladogram588.jpg 588w” sizes=”(max-width: 584px) 100vw, 584px” />

Figure 1. Elacatinus the neon goby, full scale on a 72 dpi monitor.

Elacatinus oceanops (Jordan 1904; 5cm; Figs. 1–3) is the extant neon goby from Bahamas coral. It is common in the aquariaum trade. Here in the large reptile tree (LRT, 1802+ taxa, subset Fig. 1) the neon goby nests with the mudskipper, Periophthalmus (Fig. 4). This clade is derived from the frogfish (Antennaris) clade and basal to deep-sea tripod fish (Bathypterois) and anglers (Lophius) in the LRT.

Figure 1. Elactatinus skull from Gregory 1933 ion dorsal and lateral views. ” data-medium-file=”https://pterosaurheresies.files.wordpress.com/2021/02/elactatinus_goby-lateral588.jpg?w=218″ data-large-file=”https://pterosaurheresies.files.wordpress.com/2021/02/elactatinus_goby-lateral588.jpg?w=584″ class=”size-full wp-image-53243″ src=”https://pterosaurheresies.files.wordpress.com/2021/02/elactatinus_goby-lateral588.jpg?w=584&h=803″ alt=”Figure 1. Elactatinus skull from Gregory 1933 ion dorsal and lateral views. ” width=”584″ height=”803″ srcset=”https://pterosaurheresies.files.wordpress.com/2021/02/elactatinus_goby-lateral588.jpg?w=584&h=803 584w, https://pterosaurheresies.files.wordpress.com/2021/02/elactatinus_goby-lateral588.jpg?w=109&h=150 109w, https://pterosaurheresies.files.wordpress.com/2021/02/elactatinus_goby-lateral588.jpg?w=218&h=300 218w, https://pterosaurheresies.files.wordpress.com/2021/02/elactatinus_goby-lateral588.jpg 588w” sizes=”(max-width: 584px) 100vw, 584px” />

Figure 2. Elacatinus skull from Gregory 1933 ion dorsal and lateral views.

Note the absence of a lacrimal, 
exposing the palatine completely. The postorbital is also missing.

Figure 2. Elacatinus in vivo in dorsal and lateral views. ” data-medium-file=”https://pterosaurheresies.files.wordpress.com/2021/02/elacatinus_overall588.jpg?w=300″ data-large-file=”https://pterosaurheresies.files.wordpress.com/2021/02/elacatinus_overall588.jpg?w=584″ class=”size-full wp-image-53245″ src=”https://pterosaurheresies.files.wordpress.com/2021/02/elacatinus_overall588.jpg?w=584&h=386″ alt=”Figure 2. Elacatinus in vivo in dorsal and lateral views. ” width=”584″ height=”386″ srcset=”https://pterosaurheresies.files.wordpress.com/2021/02/elacatinus_overall588.jpg?w=584&h=386 584w, https://pterosaurheresies.files.wordpress.com/2021/02/elacatinus_overall588.jpg?w=150&h=99 150w, https://pterosaurheresies.files.wordpress.com/2021/02/elacatinus_overall588.jpg?w=300&h=198 300w, https://pterosaurheresies.files.wordpress.com/2021/02/elacatinus_overall588.jpg 588w” sizes=”(max-width: 584px) 100vw, 584px” />

Figure 3. Elacatinus in vivo in dorsal and lateral views.

Figure 4. The mudskipper, Periophthalmus, nests with the neon goby, Elacatinus, in the LRT. ” data-medium-file=”https://pterosaurheresies.files.wordpress.com/2021/02/periophthalmus.skull588.jpg?w=187″ data-large-file=”https://pterosaurheresies.files.wordpress.com/2021/02/periophthalmus.skull588.jpg?w=584″ class=”size-full wp-image-53252″ src=”https://pterosaurheresies.files.wordpress.com/2021/02/periophthalmus.skull588.jpg?w=584&h=936″ alt=”Figure 4. The mudskipper, Periophthalmus, nests with the neon goby, Elacatinus, in the LRT. ” width=”584″ height=”936″ srcset=”https://pterosaurheresies.files.wordpress.com/2021/02/periophthalmus.skull588.jpg?w=584&h=936 584w, https://pterosaurheresies.files.wordpress.com/2021/02/periophthalmus.skull588.jpg?w=94&h=150 94w, https://pterosaurheresies.files.wordpress.com/2021/02/periophthalmus.skull588.jpg?w=187&h=300 187w, https://pterosaurheresies.files.wordpress.com/2021/02/periophthalmus.skull588.jpg 588w” sizes=”(max-width: 584px) 100vw, 584px” />

Figure 4. The mudskipper, Periophthalmus, nests with the neon goby, Elacatinus, in the LRT.

References
Jordan DS 1904. Ichthyology in the ‘Encyclopædia Americana.’ Science. 19: 767.

wiki/Frogfish
wiki/Periophthalmus
wiki/Elacatinus



Source: https://pterosaurheresies.wordpress.com/2021/02/20/a-tiny-goby-elacatinus-enters-the-lrt-with-the-mudskipper/


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