WTF? (WHAT’S THAT FISH?) 2: STRANGE BAHAMAS REEF FISH


Scorpionfish Close-up ©Melinda Riger @GBS copy

WTF? (WHAT’S THAT FISH?) 2: STRANGE BAHAMAS REEF FISH

WTF 1 concerned the REMORA, the upside-down looking fish with the trainer-sole sucker on its head with which it attaches itself to sharks and other large undersea creatures. If you’ve ever seen a picture of a shark with one or more grey passengers hitching a ride, those are these.

Remora ©Melinda Riger @ GB Scuba

WTF 2 features some creatures found in the reef waters of the Bahamas that make you wonder just how and why they are as they are. They look unnecessarily complicated, and the design is somewhat outlandish. See what you think of these…

BURRFISH

Burrfish ©Melinda Riger @ G B Scuba

SLIPPER LOBSTER

Slipper Lobster ©Melinda Riger @ GB Scub.

SCORPIONFISH (& header image) camouflaged against coralScorpionfish camouflaged against coral ©Melinda Riger copy

COWFISH

Cowfish ©Melinda Riger @ GB Scuba   Cowfish 2 ©Melinda Riger @ Grand Bahama Scuba copy

TRUNKFISH

Trunkfish ©Melinda Riger @GBS copy 3

PORCUPINE FISH 

“Watch this…”Porcupine Fish (Virginia Cooper via G B Suba)

“Ta Daaaaaa”porcupine-fish

 AIRPLANEFISH*

Airplane remains ©Melinda Riger @ GB Scuba

*Well, it’s really airplane wreckage. Besides a few other planes and a variety of ships that can be explored underwater, there are also two locomotives in Abaco waters that “fell off” a ship while being transported. Now recreate in your mind the subsequent conversation with an insurance company…

APOLOGIES Header image repeated to sort out FB visuals problem that’s driving me nutsScorpionfish Close-up ©Melinda Riger @GBS copy

Credits: Melinda Riger, Grand Bahama Scuba;Virginia Cooper;  itsnature.org

‘TREAT WITH PATIENCE…’ – NURSE SHARKS IN THE BAHAMAS


Nurse Shark ©Melinda Riger @ GB Scuba

‘TREAT WITH PATIENCE…’ – NURSE SHARKS IN THE BAHAMAS

The scientific name for the nurse shark sounds like something Bilbo Baggins might have said to summon elves to his rescue: Ginglymostoma cirratum. Actually the name is a mix of Greek and Latin and means “curled, hinged mouth” to describe this shark’s somewhat puckered appearance. The origin of the name “nurse shark” is unclear. It may come from the sucking sound they make when hunting for prey in the sand, which vaguely resembles that of a nursing baby. Or it may derive from an archaic word, nusse, meaning cat shark. The most likely theory though is that the name comes from the Old English word for sea-floor shark: hurse.

Shark ©Melinda Riger @ GB Scuba

Nurse sharks are slow-moving bottom-dwellers and are, for the most part, harmless to humans. However, they can be huge—up to 14 feet (4.3 meters)—and have very strong jaws filled with thousands of tiny, serrated teeth, and will bite defensively if stepped on or bothered by divers who assume they’re docile. [There are recorded instances of injuries caused to divers who have tried to pull nurse sharks by the tail. And serve them right, I say. Treat them with patience - and respect!] 

Nurse_shark_with_remoras Duncan Wright (Sabine's Sunbird)

Notice that the nurse shark in the above photo, and in the header image, is being attended by REMORAS. Click the link to find out more about the strange relationship these ‘weird suckers’ have with larger marine creatures.

Nurse Shark ©Melinda Riger @ G B Scuba

They use their strong jaws to crush and eat shellfish and even coral, but prefer to dine on fish, shrimp, and squid. [And also stingrays, apparently. They have been observed resting on the bottom with their bodies supported on their fins, possibly providing a false shelter for crustaceans which they then ambush and eat.] They are gray-brown and have distinctive tail fins that can be up to one-fourth their total length. Unlike most other sharks, nurses are smooth to the touch. 

Nurse Shark ©Melinda Riger @ Grand Bahama Scuba

Nurse sharks are found in the warm, shallow waters of the western Atlantic and eastern Pacific oceans. They are abundant throughout their range and have no special conservation status, although the closeness of their habit to human activities is putting pressure on the species.

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Nurse sharks are nocturnal and will often rest on the sea floor during the day in groups of up to 40 sharks, sometimes piled on top of each other.

Shark, Nurse (young) ©Melinda Riger @ GB Scuba

FAST FACTS

  • Type: Fish 
  • Diet:  Carnivore
  • Size: 7.5 to 9.75 ft (2.2 to 3 m)
  • Weight: 200 to 330 lbs (90 to 150 kg)
  • Size relative to a 6-ft (2-m) man:
Illustration: Shark compared with adult manNurse Shark ©Melinda Riger @ G B Scuba copy

Credits: All photos Melinda Riger, Grand Bahama Scuba; range map and text mostly  NATIONAL GEOGRAPHIC  filled out with other pickings

‘ELEGANTLY WEIRD’ – SPOTTED DRUMFISH JUVENILES: BAHAMAS REEF FISH 20


‘ELEGANTLY WEIRD’ – SPOTTED DRUMFISH JUVENILES: BAHAMAS REEF FISH 20

I’ve posted before about the rather extraordinary SPOTTED DRUMFISH, one of those reef fish which in juvenile form is very different from the adult. This species was first up in the Bahamas Reef Fish series – click above link. Here are a few recent images, courtesy of Melinda Riger. The first three show the juvenile form (note the piscine photobomb in the first one). The last shows a group of adults hanging out on the reef with (I think) some soldierfish. You can see how the juvenile drumfish becomes the adult, but those little stripy bullet-heads with their two long elegantly trailing appendages differ considerably from the rather solid-looking spotty / stripy adults with their dramatic punko-rockabilly quiffs.

Drumfish (juv) 3 ©Melinda Riger @ Grand Bahama Scuba Drumfish (juv) 4 ©Melinda Riger @ Grand Bahama ScubaDrumfish (juv) 2 ©Melinda Riger @ Grand Bahama Scuba Drumfish ©Melinda Riger @ Grand Bahama Scuba

RED REEF RESIDENTS: A RUFOUS ROUND-UP IN THE BAHAMAS


Squirrelfish (Elvis) ©Melinda Riger @ Grand Bahama Scuba copy

Elvis the Squirrelfish

RED REEF RESIDENTS: A RUFOUS ROUND-UP IN THE BAHAMAS

It’s sunny and very hot. Time to take another dive with Melinda to see what is going on under water around the reefs. Here are some residents, a somewhat loose description since some of the denizens featured are not especially active. But they are alive, so they qualify by my wide rules. And please may we not get into a discussion about where precisely red and orange overlap. It’s a grey area. And it’s too hot to argue about it… Let’s start with three types of GROUPER that may be spotted in the northern Bahamas. In fact, they are always spotted. One of my favourite pictures is the Graysby – it’s such a great expression, and he really rocks the spots!

GRAYSBY
Graysby © Melinda Riger @ Grand Bahama Scuba copy

TIGER GROUPER AT A CLEANING STATION with Peterson Cleaning Shrimps & a GobyGrouper, Tiger with cleaning shrimps and goby ©Melinda Riger @ G B Scuba copyRED HINDRed Hind Grouper Melinda Riger @ G B Scuba copy

BLACKBAR SOLDIERFISHBlackbar Soldierfish ©Melinda Riger @ G B Scuba copy

HOGFISHHogfish ©Melinda Riger @ GB Scuba copy 2

SQUIRRELFISHSquirrelfish 2 copy

But red fish are not the only red reef residents. Here are some  that won’t swim away from you as you swim towards them to admire them…

A FEATHER DUSTER ON A SPONGEFeather Duster in a Sponge ©Melinda Riger @ Grand Bahama Scuba copy

RED SPONGERed Sponge ©Melinda Riger @ GB Scuba copyUNDERWATER GARDEN GROWING IN A RED CONTAINERCoral ©Melinda Riger @ G B Scuba 2 copy

ANOTHER VARIED REEF GARDENReef Garden ©Melinda Riger@ G B Scuba copy

CORALS WITH (I have just noticed) A LURKING LIONFISH Coral ©Melinda Riger @ G B Scuba 1 copy

CHRISTMAS TREE WORMS (see more of these amazing creatures HERE)Christmas Tree Worms ©Melinda Riger @ G B Scuba copy

All photos: Melinda Riger @ Grand Bahama Scuba

‘TAKEN TO THE CLEANERS': REEF FISH & CLEANING STATIONS


Goby (Cleaning) © Melinda Riger @ G B Scuba copy

Cleaning Goby (Melinda Riger)

‘TAKEN TO THE CLEANERS': REEF FISH & CLEANING STATIONS

A cleaning station is a place where fish and and other aquatic life congregate to be cleaned. This involves the removal of parasites both externally and internally, and is be performed by various creatures including, on the coral reefs of the Bahamas, cleaner shrimps and various species of cleaning fish such as wrasses and gobies. The process conveniently benefits both the cleaned and the cleaner.

Tiger Grouper being cleaned by Cleaner ShrimpsGrouper being cleaned ©Melinda Riger @ GB Scuba copy

Blue Parrotfish being cleaned (or tickled, from its expression) by a Cleaner Shrimp Blue Parrot Fish & Peterson Cleaner Shrimp ©Melinda Riger @ G B Scuba copy

  Black Grouper being cleaned by gobies – note the ones in its mouth Grouper at cleaning station ©Melinda Riger @ G B Scuba copy

Black Grouper at a Cleaning Station with gobies. Note the hook and line… Grouper, Black, at cleaning station (+ hook) ©Melinda Riger @ GB Scuba copy

Tiger Grouper being cleaned by GobiesTiger Grouper being cleaned ©Melinda Riger @G B Scuba copy

Gobies checking a hand for parasites….Cleaning Gobies copy

When a fish approaches a cleaning station it will open its mouth wide or position its body in such a way as to signal that it needs cleaning. The cleaner fish will then remove and eat the parasites from the skin, even swimming into the mouth and gills of the fish being cleaned.

“Clean me!” An amazing view of a Tiger Grouper at a CleaningStation with its gills wide openGrouper, Tiger - gills open at cleaning station ©Melinda Riger @GB Scuba copy

Grouper at a cleaning station over a spongeSponge : Fish Cleaning Station ©Melinda Riger @ G B Scuba copy

Remora clinging to a shark. For more on this unusual symbiotic relationship, click HERE383586_510314062323321_1002533913_n copy

 All photos: Melinda Riger of Grand Bahama Scuba, with thanks as ever

“TOOTHY CRITTERS”: BARRACUDA ON ABACO


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“TOOTHY CRITTERS”: BARRACUDA ON ABACO

We’ve had some sharks swimming around the blog, for example HERE. But not a great deal about barracudas. Time to put that right. Melinda Riger’s excellent photographs tell you the basics of what you need to know – they are lean, mean biting machines with wicked teeth. In fact, ‘cuda bites are quite rare (unless you you very stupid or very unlucky) and many of the common sense rules that apply to fraternising with sharks in their own element apply equally with ‘cudas.

Barracuda & Diver ©Melinda Riger @ G B Scuba

Great gnashers – some teeth angle forwards & some backwards for mincing prey effectivelyBarracuda ©Melinda Riger @ G B Scuba Barracuda ©Melinda Riger @ GB Scuba copy 800px-Barracuda_laban

Lobbing a brightly-coloured lure from a skiff using a spinning rod into the general vicinity of a barracuda can result in a heart-stopping few seconds as the fish plunges towards the lure at astonishing speed. If it takes it, there’s even more fun to be had bringing it in. ‘Cuda steaks are delicious, but some care needs to be taken. These fish are known carriers of CIGUATERA fish-poisoning. Click the link to find out about the unpleasantness of the toxin involved. On Abaco, ‘cudas from one side of the island are OK, and from the other side may be suspect… just make sure you know which is which before you cook your supper…

BARRACUDA ©Melida Riger @ G B  ScubaBarracuda ©Melinda Riger @ GB Scuba

PUFFER FISH: BAHAMAS REEF FISH (19)


Sharpnose Puffer Fish

Sharpnose Puffer Fish

PUFFER FISH: BAHAMAS REEF FISH (19)

10 PUFFER FISH FACTS TO ASTONISH YOUR FAMILY & FRIENDS

1. Puffers can inflate their bodies in an instant by ingesting huge amounts of water and becoming water-filled balloons.

2. They need a startling form of defence like this (or ‘piscatorial superpower’) because they can’t swim very well.

3. However, a persistent predator will find that they contain a toxin (tetrodotoxin TTX) that is a hundred times stronger than cyanide. One puffer fish has enough toxin to kill quite a few humans.  Agatha Christie was unaware of this – had she been, we might have had a classic  multiple murder mystery based on the contents of a fish tank… “Poirot and a Fishy Tale of the Caribbean”

Sharp Nose Puffer Fish ©Melinda Riger @GB Scuba

Sharpnose Puffer Fish

4. Selected parts of a puffer fish are a delicacy in some cultures (‘fugu’, in Japan). Trained chefs are used to avoid mass deaths among diners.

5. Sharks are the only species immune to the puffer fish and are not much bothered by a small fish that can blow itself up.

6. Puffers have skin, not scales; most have toxic spines of some sort. Bright coloured ones are probably more toxic than their duller cousins.

Sharp-nosed Puffer Fish ©Melinda Riger @ Grand Bahama Scuba

Sharpnose Puffer Fish

7. It’s worth knowing what an uninflated puffer looks like before you try to pet a passing fish and have a toxic encounter.

8. There are more than a hundred puffer species in the world, found where there are warm shallow waters.

9. No all puffers are toxic; and some are more toxic than others.

10. I have no idea of the relative toxicity of the 2 puffer species featured here. Sorry about that. Take care!

Animal-Fish-Photo-Canthigaster-rostrata-Caribbean-Sharp-Nose-Puffer-1000x401 Animal-Fish-Photo-Canthigaster-rostrata-Inflated-Caribbean-Sharp-Nose-Puffer-1000x590

The fish above are all Sharpnose Puffer Fish taken by Melinda Riger of Grand Bahama Scuba; the rather nice drawings of the species are courtesy of the Smithsonian via ‘Vintage Printables’.  

CHECKERED PUFFER FISH

I photographed some Checkered Puffers at Sandy Point, Abaco last summer. None was puffed up, and I wasn’t about to upset them. The following photos of a small group of puffers were taken from above and not underwater (“no fear”). 

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Checkered Puffer Fish, Sandy Point, Abaco

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Checkered Puffer Fish, Sandy Point, Abaco

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Checkered Puffer Fish, Sandy Point, Abaco

I don’t know what species of puffer the one below may be, but I do know I don’t want it in the palm of my hand. I include it from an ‘info for kids’ site to illustrate what the full balloon looks like. I’m wondering if all one needs to deal with them is a pin on the end of a long stick…

puffer-fish-facts-for-kids

Puffer Fish at Full Puff

FURTHER READING about dodgy creatures you may encounter:

5 CREATURES ON ABACO THAT YOU MAY WISH TO AVOID

SPIDER WASPS & TARANTULA HAWKS: DON’T MESS WITH THESE GUYS