Inks similar to Whale Shark Grey: I didn’t really have any inks quite this color, but the closest were Wearingeul Macbeth and 24 Solar Term Rain Water #2, both of which were more grey. Montblanc Midnight Blue was too blue and not grey enough. I picked 3 other greys that also looked nothing like this one for comparison - Iroshizuku Fuyu-syogun, Visconti Old Vineyard with Peasant Woman, Iroshizuku Kiri-same.
As with the other series, all of the inks behaved well, were pleasant to write with, and cleaned out easily though Piranha Red took a wee bit longer to get all the ink out (I suspect it could stain a converter, so ymmv). While some inks looked fairly similar from different pens, some of them really looked different.
If I had to pick favorites in the bunch, they would be Moray Eel Green because I love this murky olive color and because it reminds me of my scuba adventures, and Whale Shark Grey because it’s unlike many of the blues and greys I own. In my review of the Avian Series, I was hoping that “maybe the upcoming Ichthyoformes series will have a purple” and I love the color of Betta Fish Purple. Overall, the colors are nice and they are worth the purchase if you don’t already have similarly colored inks. I do think the inks are fairly “straight forward”, compared to shimmer, sheening, or chromashading inks.
Anderillium inks sell for $14.50 per 1.5 ounce bottle, or $50 for 0.5 ounce sample sets of all 8 inks. They can be purchased directly from Anderillium or from authorized resellers.
(Disclaimer: Thank you to Anderillium Inks for providing these inks for review. Anglerfish Deep was purchased at regular price from Darail Penz at the Philly Pen Show.)