X is for Xyrauchen texanus, the razorback sucker. This is one from last year where I imagined it on a stamp for the Navajo Nation.

5 34

T is for Tricerichthys, the best three-horned face of the Cretaceous. Also featuring nice spines on the cleithra and anal fin!

6 39

Another species "Sicyopterus lagocephalus" with a widespread distribution throughout tropical Indo-Pacific spanning from Comoros to French Polynesia

This broader range is perhaps due to a longer "larval marine phase" for the species

4 11

For Day "S" of I hail Satan🤘, a monotypic genus of stygobitic ictalurid catfish endemic to just five artesian wells penetrating the San Antonio Pool of the Edwards Aquifer in and near San Antonio, Texas.
https://t.co/ygVgdDN9LV

7 21

O is for Onchopristis, the perpetual second fiddle to a theropod whose name I forget. My old drawing gets the rostrum morphology a little wrong, but you get the idea.

3 16

For Day "O" of I present a genus of cyprinodontiform fishes found in lakes, rivers and springs in the Andean highlands of South America. The largest species can reach up to 27 cm in length.
https://t.co/yccguaZr6j

8 25

"N" is for Noturus exilis, the slender madtom! These cuties are a small catfish in the family Ictaluridae, the North American freshwater catfishes. The image on the right was painted by me!

3 18

Check out the body squamation in the male of Lentipes mindanaoensis... The scales vary longitudinally in shape across the body!!!

6 20

It might be an obvious one for day "L" of but I Love the Legendary Loveable Latimeria chalumnae! This Coelacanth is:
• Critically per
Appendix I (Int'l is generally prohibited)
ESA Threatened (Tanzanian DPS)

14 62

Ok, I really want to keep up with For L, we got Lasiognathus! One of the two genera of Wolftrap anglerfish, their premaxilla fold laterally to enclose the lower jaw... like a venus flytrap! Found in the Atlantic and Pacific, bathypelagic, six species

25 117

I think we're up to "I" in so it's time for Icarealcyon, a Triassic holostean (gar + bowfin relative) once thought to be able to glide with its broad pectoral fins.

3 15

Before continuing on the journey, we jump to (and a belated - "moon") with an Opah or Moonfish circa 2016 (L) and last week (R).

Thanks to for starting I LOVE seeing all the 🐟✏ each week 🙌

1 25

Another old drawing for the Devonian lungfish Griphognathus

3 26