Strange Fishes from the Deep: Black Jacks and More

Sport Fishing readers try to stump the Fish Facts experts with strange catches.

Odds Are Good on a Black Jack

QUESTION:

I caught this fish 120 miles offshore out of Freeport, Texas, while chunking for tuna at Hoover Spar. No one aboard had seen one before. What in the world did I come across?

Mikkel Simoes-Correia
Spring, Texas

Black jack caught off Freeport
Black jackMikkel Simoes-Correia

ANSWER:

Mikkel, you caught a real prize: That's a black jack, Caranx lugubris. And it is for sure a rarity in the northern Gulf. But the species is exceptionally widespread, found in all of our planet's major tropical oceans, especially around oceanic islands. Since it favors offshore waters, usually in depths of more than several hundred feet, not a whole lot is known about the species. Although I've not seen one more than 20 pounds, they do get larger: The IGFA all-tackle world record weighed 41 pounds, 7 ounces, caught in the Pacific at Mexico's Hurricane Bank in 2013. It is an important food species in some developing nations' markets, and some people consider it excellent, but it is a bloody beast, similar to our crevalle jack. Also, it has been implicated in ciguatera poisoning. So I think the best advice for anyone catching a black jack is to take a photo and toss it back.

—Bob Shipp

Painful Discovery

QUESTION:

Our skipper out of Port Canaveral, Florida, hauled in his cast net early on a winter morning, along with a passel of pogies and—most unfortunately—a man-of-war jellyfish. Along with some surprise stings from tentacles stuck in the net, we saw this little feller drop out onto the deck. Its unusual color pattern caught our eye, but no one knew for sure what it might be.

Scott Salyers
Miami

Juvenile man-of-war fish caught off Port Canaveral
Juvenile man-of-war fishScott Salyers

ANSWER:

That's an interesting ­little fish, Scott: a juvenile man-of-war fish, Nomeus gronovii. As its name implies, juveniles live in a symbiotic relationship with Portuguese man-of-war, Physalia physalis. Although it somewhat resembles a jellyfish, the Portuguese man-of-war is actually a colonial hydrozoan that is more closely related to fire corals, Millepora spp. (which are not true corals) than it is to the jellyfishes. The relationship between the fish and its host appears to be mutual: The Portuguese man-of-war likely benefits from the man-of-war fish luring other fishes into its waiting tentacles, and the fish benefits by receiving protection from, and feeding on portions of, its ­hydrozoan host. The man-of-war fish is not immune to nor able to suppress the stings of the Portuguese man-of-war; rather, it is highly maneuverable and skillfully avoids the hydrozoan's potentially lethal tentacles. Adult man-of-war fish may reach nearly 16 inches in length and, unlike their young, live in offshore waters to depths in excess of 3,000 feet. The man-of-war fish is widely distributed in the tropical, subtropical, and warm temperate Atlantic, Pacific and Indian oceans, although it hasn't been reported from the Mediterranean Sea and is rare in portions of the eastern Atlantic. Due to its small size and the deep habitat frequented by adults, it has no commercial value. I have never tried eating one myself, and I've never read a report dealing with its food value.

—Ray Waldner

Saddle Up

QUESTION:

I caught this while jigging off Madagascar. It looks like some sort of goatfish? Can you identify it and tell me more about it?

Julien Lajournade
Fishing & Travel
Paris

Gold-saddle goatfish caught in Madagascar
Gold-saddle goatfishJulien Lajournade

ANSWER:

What you have there, Julien, is a very nice gold-saddle goatfish (Parupeneus cyclostomus) in a rare red color phase. This species can ­display any of several color variations, most commonly a ­purplish-gray body with blue edges to the scales. But it can also be entirely yellow. This one, however, is the rarer reddish-pink phase that has provided this species the ­alternative name of red mullet. You can still see the very faint ­yellow color of the "saddle" covering the upper side of the caudal ­peduncle (tail wrist), and if you look very closely, you can see several short narrow blue bands ­radiating from the eye, a marking that is particular to this species among goatfishes.

The gold-saddle is one of the largest of goatfishes, growing to 20 inches long and around 5 pounds. It occurs primarily over sand and rubble areas on coral reefs and inshore waters in much of the Indo-Pacific region. Stomach-content analyses suggest the species eats mainly fish, which is a little unusual for goatfishes (but not unique), and is probably why it took a liking to your large jig.

—Ben Diggles

Hold Your Tonguefish

QUESTION:

This past August, while ­netting bait shrimp in a shallow creek in Murrells Inlet, South Carolina, I found two of these little guys in the bottom of my bucket. I’ve caught some uncommon flatfish in the past, such as windowpane flounder and ­hogchokers, but none as narrow or tapered as these little guys. What do the experts say?

RJ Green
Socastee, South Carolina

Tonguefish netted in Murrells Inlet
TonguefishRJ Green

ANSWER:

You caught two tonguefish, members of the family Cynoglossidae, RJ. While I can't be certain of the species from looking at your photographs, I believe your catches were freckled tonguefish, Symphurus ­nebulosus. This isn't exactly a large species; it reaches a known maximum length of only just over 3 inches. Its range extends from New York through much of South Florida's Atlantic coastline. The freckled tonguefish is known to inhabit muddy-bottom areas of the lower continental shelf and upper continental slope, which makes your ­shallow-water catch highly unusual—if, in fact, is it S. nebulosus. Little is known of the freckled tonguefish's biology; being small, ­lacking any commercial value, and living in relatively deep water, it is rarely encountered by anglers.

—Ray Waldner

Little Guy with a Big Eye

QUESTION:

I hooked this fish while jigging at night in 600 feet of water around South Luconia Shoal, off Borneo, southwest of the Spratly Islands. What is it?

Anthony Loo
Via email

Meyers bigeye caught of Borneo
Meyers bigeyeAnthony Loo

ANSWER:

That, Anthony, is a Meyers bigeye, also known as a striped bigeye (Pristigenys meyeri). These pretty little deepwater fish are members of the family Priacanthidae (bigeyes), found in the South China Sea south to northern Australia. Bigeyes are nocturnal, remaining inside caves and under crevices during the day in waters up to 1,000 feet deep or more. Juvenile fish, however, can stray into shallower waters, where they are sometimes collected alive since they're considered a ­high-value aquarium fish. Not much is known about the biology of P. meyeri, but it grows to around 9 inches long and, like other species of bigeye, probably feeds on shrimps, other crustaceans and smaller fishes.

—Ben Diggles

Sport Fishing's Prestigious International Panel of Experts

Northeast
Mike Fahay, Sandy Hook Marine Lab, New Jersey

Southeast
Ray Waldner, Ph.D., Palm Beach Atlantic ­University, Florida

Gulf of Mexico
Bob Shipp, Ph.D., ­University of South ­Alabama

West Coast
Milton Love, Ph.D., UCSB, California

Far Pacific
Ben Diggles, Ph.D., Queensland, Australia

Bluewater Pelagics
John Graves, Ph.D., Virginia Institute of Marine Science

Fishing line Berkley SpiderWire
E-mail your questions with strange or surprising photos to fishfacts@sportfishingmag.com.Courtesy Berkley

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Tunas and Billfishes of the WorldJohns Hopkins University Press

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