HAWKSBILL TURTLES + ANGELS = REEF HEAVEN


Hawksbill Turtle & Angelfish (Melinda Riger / Grand Bahama Scuba)

HAWKSBILL TURTLES + ANGELS = REEF HEAVEN

Hawksbills on their own, nosing around the colourful coral reefs of the Bahamas, are a beautiful sight. I don’t want to overdo the religious tendency of the title, but they are indeed wonderful to behold. Add FRENCH ANGELFISH and a QUEEN ANGELFISH and it’s as close to perfection as a reef scene gets. Click on the links above for more pictures and details about the two angelfish species seen here with the turtle. As ever, Melinda Riger was ready with her camera to capture these great images.

Hawksbill Turtle & Angelfish (Melinda Riger / Grand Bahama Scuba) Hawksbill Turtle & Angelfish (Melinda Riger / Grand Bahama Scuba) Hawksbill Turtle & Angelfish (Melinda Riger / Grand Bahama Scuba) Hawksbill Turtle & Angelfish (Melinda Riger / Grand Bahama Scuba)

This astonishing photo was of course achieved by carefully balancing a GoPro on the turtle’s back, wrapping duct tape around it, and pressing ‘go’ (camera and turtle simultaneously). **

Hawksbill Turtle & Angelfish (Melinda Riger / Grand Bahama Scuba)

** This is not true. It’s just a cleverly shot turtle’s-eye view as it forages on the reef

This short video shot by Melinda’s husband Fred of a turtle ‘loving’ the camera is one of those wildlife events that cannot be predicted… but when it happens, it’s frankly a bit of a scoop.

OPTIONAL MUSICAL DIGRESSION

As I was writing this, an earworm started up and grew insidiously in both ears and then inside my head… the dread words “Elenore, gee I think you’re swell”. Followed by “so happy together…”. And then “she’d rather be with me…” Yes, I’ve now got TURTLES in my head, the (?long-and-hitherto-forgotten) band from the second half of the 60’s, with their cheery anodyne soppy-poppy love songs. And dammit, they’ve stuck… Here’s a reminder for those whose memory I have jogged. For anyone under, say, 75, step away from this area. Nothing to hear here.

Hawksbill Turtle & Angelfish (Melinda Riger / Grand Bahama Scuba)

Credits: Grand Bahama Scuba: all photos – Melinda Riger & video – Fred Riger; Turtle music – someone else’s music collection, not mine, honestly… (oh dear another lie I am afraid – cred gone)

BAHAMAS REEF FISH (36): REEF BUTTERFLYFISH


Reef Butterflyfish, Bahamas - Melinda Riger / Grand Bahama Scuba

 BAHAMAS REEF FISH (36): REEF BUTTERFLYFISH

Butterflyfishes come in several varieties in Bahamian waters; and there are more than 120 species worldwide. Not so long ago I wrote about the LONGSNOUT variety, also known as the “Butterbun”. Now it’s time to take a look at the Reef Butterfyfish.

Reef Butterflyfish, Bahamas - Melinda Riger / Grand Bahama Scuba

In some ways butterflyfishes resemble small angelfishes – adult Reefs are just a few inches long. As the name suggests, these are creatures of the reefs, and of shallow waters. As one might expect, these colourful fish are popular for aquariums (or, strictly I suppose, aquaria). 

Reef Butterflyfish, Bahamas - Melinda Riger / Grand Bahama Scuba

Butterflyfishes have interesting spawning patterns. They release large numbers of buoyant eggs into the water. These become mixed in with plankton and suchlike, and float where the tides take them until they hatch. Then, most unusually, they go through a larval stage when they are covered by bony material, which they lose as they mature. This is known as an ‘armoured’ stage, which I can only assume is to provide protection to the tiny fry – perhaps by making them crunchy and unappetising. I’ve been trying to find a usable illustrative drawing, without success so far.

Reef Butterflyfish, Bahamas - Melinda Riger / Grand Bahama Scuba

OPTIONAL MUSICAL DIGRESSION

In some parts of the world the butterflyfish is called a BORBOLETTA, which is Portugese for ‘butterfly’. It is also the title of Santana’s criminally underrated sixth album (1974). For sure it’s no 1st, Abraxas, 3rd or Caravanserai… but if you can tolerate the man’s move to ‘jazz-funk-fusion’ – maybe John McLaughlin had a hand in that – there is much to enjoy. There’s less searing guitar and there’s some strange ‘soundscape’ stuff that’s maybe not to everyone’s taste. But still – it stand up pretty well in comparison with some of the later Carlos creations where a certain tiresomeness began to creep in and some tracks are (IMVHO) not really listenable-to. Anyway, the recently released (2016) Santana IV is a welcome return to the good old days, and the good old team.

Here’s ‘Promise of a Fisherman’ – 8 minutes of  Santana, from which you can judge the direction he’s taken by Album 6…

Reef Butterflyfish, Bahamas - Melinda Riger / Grand Bahama Scuba

All photos by Melinda Riger of Grand Bahama Scuba – mainstay, with Adam Rees, of the underwater photos I use, what with me being a feeble swimmer and all. Tip o’ the Hat to Carlos, who I have even managed to see Live a couple of times.

REDSPOTTED HAWKFISH: BAHAMAS REEF FISH (35)


Redspotted Hawkfish, Bahamas (Melinda Riger)

REDSPOTTED HAWKFISH: BAHAMAS REEF FISH (35)

The redspotted hawkfish (Amblycirrhitus pinos) is one of a number of species of hawkfishes found worldwide. This one is found on the sub-tropical and tropical reefs of the Western Atlantic, and is therefore a fish you might see when out snorkelling or (more likely) scuba-ing in the Bahamas. These are small creatures – adults are unlikely to exceed 4 inches in length.

Redspotted Hawkfish, Bahamas (Melinda Riger)

There’s not a whole lot else to report about them. They have no medicinal superpowers, for example, nor wickedly toxic spines. A quick scroll through the highways and byways of the interweb reveals that redspotted hawkfish are considered (rightly, I think) to be attractive, tend to be shy, enjoy perching on coral ledges, and are generally benign, except to smaller fishes to which they may show aggression or – worse – an appetite. 

Redspotted Hawkfish, Bahamas (Melinda Riger)

As you might predict, these pretty little fish are popular in the aquarium trade, where on any view they should be kept safe from predators. But maybe captivity is a little limited in opportunities for travel and exploration. They can be bought for (I just checked) $29.99. Or else left alone on a reef to take their chances.

Photo Credits: Melinda Riger / Grand Bahama Scuba, with thanks as per…

WTF? (WHAT’S THAT FISH?) 13: THE ROUGHHEAD BLENNY


Roughhead Blenny - Melinda Riger / Grand Bahama Scuba

WTF? (WHAT’S THAT FISH?) 13: THE ROUGHHEAD BLENNY

The WTF? series has looked at a number of bizarre reef denizens, and this little fish is certainly that. For a start, its ‘correct’ name is Acanthemblemaria aspera, an excellent challenge for saying 10 times very quickly **. And the name blenny comes from the Greek word for ‘slime’, quite enough to make the poor creature a laughing-stock in the reef community.

Roughhead Blenny - Melinda Riger / Grand Bahama Scuba

There are in fact several hundred blenny species and subspecies around the world. The roughhead is one of the most commonly found in western Atlantic subtropical and tropical waters. These are burrowing creatures, and they find holes in the nooks and crannies of coral reefs – and indeed in the coral itself. Brain coral seems to be a preferred location. Mollusc shells are another. Or they may just bury themselves in the sea floor. 

Roughhead Blenny - Melinda Riger / Grand Bahama Scuba

The  ‘roughness’ of head refers to the whiskery appendages (cirri) on a blenny’s blunt bonce – slender tendril or hair-like filaments. The word cirri is the plural version of the wispy high altitude cirrus clouds that streak the sky. These tendrils are shown clearly in some of the photos here, despite the tiny size of the fish (± 1 inch). 

Roughhead Blenny - Melinda Riger / Grand Bahama Scuba

THESE GUYS LOOK A BIT PRIMITIVE, AM I RIGHT?

To be precise – as far as is possible – blennies can be dated back to the Paleocene Era (or is it an Epoch?). This spanned a period 66 to 56 million years ago – around the time of the formation of the Rolling Stones.

Roughhead Blenny - Melinda Riger / Grand Bahama Scuba

You can find out more about roughheads in this excellent eHow video I came across after I’d written this post, to which I should now add that there is considerable colour variation in this subspecies, as you may already have noticed…

** You can also try this with ‘Red Lorry Yellow Lorry’. Yes I know. Maddening, isn’t it. You can’t stop now you’ve started. Sorry…

Credits: all photo, Melinda Riger; video, eHow

DUSKY DAMSELFISH: BAHAMAS REEF FISH (34)


Dusky Damselfish, Bahamas (Melinda Riger)

DUSKY DAMSELFISH: BAHAMAS REEF FISH (34)

The dusky damselfish Stegastes fuscus is one of a number of damselfish species found in Bahamian waters. These small reef fish, in adult form, are dark coloured as their name suggests. Their appearance is brightened by having distinctive blue edges to their fins.

Dusky Damselfish, Bahamas (Melinda Riger)

These fish feed mainly on algae, with a preference for red. They top up their diet with small invertebrates. Their value to the reef is that their feeding patterns help to prevent coarser seaweeds from becoming dominant in areas where these are prevalent. 

Dusky Damselfish, Bahamas (Melinda Riger)

Like many damselfish, the dusky is a territorial species, guarding its chosen area of seabed and the food sources within it by repelling intruders – often seeing off far larger algae-grazing fishes such as parrotfish and wrasse. Yet besides their aggressive traits, they are also rather cute, as photo #2 shows!

Dusky damselfish, Bahamas (Melinda Riger)

All photos: Melinda Riger / Grand Bahama Scuba

FORAYS WITH MORAYS (4): EXPRESSIVE FEATURES


Green Moray Eel (Melinda Riger / Grand Bahama Scuba)

FORAYS WITH MORAYS (4): EXPRESSIVE FEATURES

Time to return to those extremely expressive characters of the coral reefs, moray eels. Specifically, some green morays. One hesitates to anthropomorphise or ‘project’ human emotions onto creatures but with some species it’s hard not to do so. Following Mr Grumpy (or perhaps Mr Sad) in the header image, here are some close-ups of morays appearing to express their emotions, from happy to downright furious… Eels featured here include Judy and Wasabi, and I remind myself that the human habit of naming familiar wild creatures is itself a (perfectly harmless) form of benign animism. Exactly as with the regular banded piping plovers featured elsewhere in this blog that overwinter on Abaco’s beaches, such as Harry Potter, Bahama Mama and the delightfully-named Felicia Fancybottom…

Happy and contented?Green Moray Eel (Melinda Riger / Grand Bahama Scuba)Green Moray Eel (Melinda Riger / Grand Bahama Scuba)Green Moray Eel (Melinda Riger / Grand Bahama Scuba)

Something on my mind…Green Moray Eel (Melinda Riger / Grand Bahama Scuba)

Slightly amused?Green Moray Eel (Melinda Riger / Grand Bahama Scuba)

Pretty funny, actuallyGreen Moray Eel (Melinda Riger / Grand Bahama Scuba)

Ha ha…! Hilair!Green Moray Eel (Melinda Riger / Grand Bahama Scuba)

Watch it. You are beginning to bug us, Mr Harbour, with your stupid captionsGreen Moray Eel (Melinda Riger / Grand Bahama Scuba)

ANGRY. BACK OFF… NOW!!!Green Moray Eel (Melinda Riger / Grand Bahama Scuba)

THE NEXT POST WILL BE FROM ABACO HQ NEXT WEEK

Credits: All morayvellous photos, Melinda Riger / Grand Bahama Scuba except 6, Virginia Cooper / Grand Bahama Scuba

BLUEHEAD WRASSE: PRIVATE LIFE LAID BARE


bluehead_wrasse_thallasoma_bifasciatum_oregonstate-edu-pinterest

BLUEHEAD WRASSE: PRIVATE LIFE LAID BARE

The bluehead wrasse (or blue-headed wrasse) Thalassoma bifasciatum is a denizen of the coral reefs of the tropical waters of the western Atlantic Ocean. This bright little 4-inch fish is… a wrasse with a blue head. No more and no less. Unless it’s a juvenile. Then it is mainly bright yellow. It’s similar to BLUE TANG (aka ‘the Disney Dory’), which starts life bright yellow and grows up to be blue.

blue-head-wrasse-melinda-riger-g-b-scuba-copy

The species may be found singly, in pairs or small groups, or in schools.  They have an important role to play in the life of the reef. They are CLEANER FISH, vital to the health and wellbeing of the larger species they attend to, and thus of the reef itself. This is ‘cleaning symbiosis’, a relationship of mutual benefit. The big fish get cleaned; the little fish have a useful function and – importantly for them – therefore don’t get eaten. 

thalassoma_bifasciatum_bluehead_wrasse_san_salvador_island_bahamas-james-st-john-wiki

Having said that, blueheads are of course fair game as a snack for species that aren’t in the market for their cleaning services. And, unfairly, some species that are content to let cleaner gobies runtle around their gills and mouths are not so considerate of the wrasse. Some types of grouper and moray eel, for example.

bluehead_wrasse

TELL US EXACTLY SEVEN BLUEHEAD WRASSE FACTS

  • Juveniles can alter the intensity of their colour, stripes & bars
  • The bluehead wrasse is a ‘protogynous sequential hermaphrodite’
  • All are born female**. Some change sex to male during maturation (see below)
  • Food includes zooplankton, small molluscs and small crustaceans…
  • …and parasites / other juicy bits (fungal growths, anyone?) from bigger fish
  • The main threat to the species is coral reef degradation or destruction
  • The bright colours invite aquarium use, but the trade is not a significant one

** Some sources suggest some are born male and remain male. I’m not sure which is right

A juvenile bluehead (with feather-duster worms) – mostly yellow, with a pale underside
Bluehead Wrasse juvenile (wiki)

THE REMARKABLE SEX LIFE OF THE BLUEHEAD WRASSE

This is an unavoidable topic, I’m afraid. The bluehead’s sex life is the most interesting thing about them, and this is no time to be prudish. It is the subject of extensive scientific research, not all of which I have read since I decided to write about the species last night. Like many human relationships, “it’s complicated”, but in a conch shell it boils down to this:

  • To recap, BWs are born female and as they mature, some become male.
  • Males reach an ‘initial phase’ when they can breed in groups with females
  • Some males grow even larger & reach full colouration. This is the ‘terminal phase’
  • These large males aggressively chase away smaller ones & seek females to pair with
  • Their state of readiness (as it were) is signalled by colour changes
  • This behaviour is similar to that seen in many city centres in a Saturday night
  • The smaller fish have one bonus – their sperm count is higher than a dominant male
  • Prozac tests have shown that the drug reduces a dominant male’s aggression

blue-headed_wrasse_det (wiki)

As the excellent organisation OCEANA puts it: Bluehead Wrasses may reproduce in four different ways throughout their lifetime:  1) as a female in a group spawning event; 2) as a female in a pair spawning event within the territory of a large male; 3) as a small male in a group spawning event; and 4) as a dominant, terminal male in a pair spawning event within its own territory.

A cropped still from a video I took at Fowl Cay marine reserve. I’ve looked at dozens of images online and not found one that was all blue with a yellow end to its tail fin. Maybe it’s not a BW at all. Or it’s a different type of fish completely. Or perhaps it is just an all-blue alpha male.bluehead-wrasse-fowl-cay-mr-abaco

Credits & Sources: Melinda Riger; Adam Rees; James St John; Oregon State edu / Pinterest; Wiki images; self; Oceana; IUCN; magpie pickings

A bluehead wrasse passes the time of day with a gruntbluehead-wrasse-grunt-adam-rees