Joe Rowlett
  • Joe is classically trained in the zoological arts and sciences, with a particular focus on the esoterica of invertebrate taxonomy and evolution. He’s written for several aquarium publications and for many years lorded over the marinelife at Chicago’s venerable Old Town Aquarium. He currently studies prairie insect ecology at the Field Museum of Natural History and fish phylogenetics at the University of Chicago.

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Recent Content

Heteroconger fugax, An Unexpected New Species Of Garden Eel

Heteroconger fugax, An Unexpected New Species Of Garden Eel


It’s been nearly a decade since the world has been introduced to a new species of garden eel. The large colonies formed by these fishes tend to be easily noticed, and the species themselves are usually strikingly patterned, making this an easily classified and well-studied group.

Abudefduf nigrimargo, the Sergeant Majors Have A New Species

Abudefduf nigrimargo, the Sergeant Majors Have A New Species


The
Abudefduf damselfishes are a challenging group in many ways. Aquarists know these to be some of the meanest of pomacentrids, but these fishes can be just as confounding to those brave souls seeking to understand their complex evolutionary interrelationships.

This Anemone Is A Very Convincing Xenia Mimic

This Anemone Is A Very Convincing Xenia Mimic


Truth be told, the first time that I saw this photograph I was completely fooled. Surely it had to be a soft coral of some sort… those large fluffy polyps must belong to a xeniid, right?

When I was then told by Cameron Bee at Monsoon Aquatics that it was, in fact, an anemone collected from the shallow waters around Darwin, Australia, it was a revelation.

Conglomeratusclera Is The Fun New Name For “Blue Xenia”

Conglomeratusclera Is The Fun New Name For “Blue Xenia”


The taxonomy of xeniid corals has in recent years become almost indecipherable. Thanks to the increased use of genetic sequencing and SEM microscopy, we now have a better understanding of this group’s true biodiversity, but it’s had the consequence of rendering our old systems of classification obsolete.

An Astoundingly Rare Hybrid Surgeonfish From Dynasty Marine

An Astoundingly Rare Hybrid Surgeonfish From Dynasty Marine

A general rule among most hybrids is that the two parent species need to be closely related to produce progeny. We see this maxim pop up again and again among reef fishes. This is why we can get a Bluespicuous Angelfish or a Lamarckispilos Angelfish, but not, for...

The Sexy Shrimp Is A (Sexy) Species Complex

The Sexy Shrimp Is A (Sexy) Species Complex


Thor amboinensis
, the Sexy Shrimp, is a colorful and highly erotic crustacean familiar to aquarists and divers alike, beloved for the sensual manner with which it shakes its derriere. This tiny caridean is typically encountered in close proximity to sea anemones and is alleged to be one of the few reef organisms to have a worldwide distribution in tropical waters.

Five New Species Of Blanket-hermit Crabs

Five New Species Of Blanket-hermit Crabs

Hermit crabs are famed for the snail shells that they so dearly love, but the group is in fact highly diverse and known to occupy a wide variety of structures (the general term for these tenements being “carcinoecia”).