Prognathodes obliquus and P. dichrous are two similar yet unobtainable species from the Atlantic

The Prognathodes butterflyfishes are an underrated and seldom kept group of fishes that surely deserves some quality air time. While commoner species such as P. marcellae, P. aculeatus and P. aya make it into the trade from time to time,…

The exceedingly rare scythe butterflyfish, Prognathodes falcifer

Here is a classic Reef Builders post from October 2008 showing off one of my favorite fishes at the Denver Downtown Aquarium. ReefStock attendees will be able to see these two Prognathodes falcifer which surely represent some of the only…

Prognathodes carlhubbsi: will the real scythe butterflyfish please swim up?

Prognathodes carlhubbsi is a species of deep cool water butterflyfish which bears a close resemblance to the classic scythe butterflyfish, P. falcifer. The image above is a screencap from the Smithsonian Tropical Research Institute’s guide to Shorefishes of the Eastern…

French Butterflyfish, Prognathodes guyanensis available for the first time from LiveAquaria, hybrid coming soon

The French Butterflyfish, Prognathodes guyanensis, is an extremely rare deepwater Caribbean butterflyfish which has very seldomly been collected for the aquarium trade. Most fish books list this species as being widespread in the Caribbean and absent from Florida, but recently,…

Prognathodes guyanensis (French butterflyfish) and P. aya (Banks butterflyfish), neptune grouper and clarion passer hybrid are at House of Fins this weekend

Prognathodes guyanensis, Prognathodes aya, Holacanthus clarionensis x H. passer and many more of the rarest reef and marine fish will be on display and for sale at this weeekend’s Splash sale event at House of Fins in Greenwich CT. The…

Prognathodes basabei and Odontanthias fuscipinnis make a stateside appearance

Although it seems like Japan gets all the coolest, rarest fish even if they come from Hawaii, Reef Builders reader JP is a determined collector from the Northeastern U.S. who has dedicated himself to creating the ultimate aquarium for rare…

Prognathodes basabei, the Orange Margin butterflyfish pushes the limits of how deep fish are collected

After ten years since the first time this species was collected, Blue Harbor has once again obtained the ultimate deep living butterflyfish, Prognathodes basabei. This Deepwater Hawaiian endemic was originally collected in 1998 and it was known for a long…

The exceedingly rare scythe butterflyfish, Prognathodes falcifer

The scythe butterflyfish, Prognathodes falcifer is a rare coolwater fish which comes from the East Pacific Ocean in southern california, USA to Baja California, Mexico. Apparently, this species occur in shallower waters in the U.S. where it is not legal…

10 Rare Hawaiian Aquarium Fish

Hawaii is well known as a hot spot of endemism both above and below the water and this is a fact which aquarium fish fanciers are very well acquainted with. Many common shallow water species that have been enjoyed by…

Top 10 New Species of Reef Fish of 2019

This past 2019 was a fruitful year of new saltwater and reef fish species, introducing fish lovers to a whole host of new species. More so than other years we were treated to a nice variety of new official descriptions…