Fish Populations Decline At Maeda Point – Not A Good Sign!

I originally got SCUBA certified at Maeda Misaki in 1992. I have seen this popular snorkeling location drastically change over the years with the increase in tourism. Meada point is now a high traffic area, literally thousands of people enter the water on a given weekend.
Maeda misaki diving

Maeda misaki diving

If you have ever been to maeda point you have seen the beautiful schools of Teira batfish (Platax teira). In the late 90’s there were massive schools of hundreds of these beautiful fish. Below is an old photograph I found in my photo album. This was a common site back in the 90’s.
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Teira batfish at Maeda misaki

In 2017, I noticed that populations started declining.
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Schools of batfish

2018-2019, I started seeing numbers decline to less than twenty individuals. July 2019, I went to the same location on three different days and didn’t see any batfish.
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Wide angle macro

These fish are a huge tourist attraction. What could have caused the decline of the batfish populations? Possible reasons for decline:
  • Feeding the batfish man-made products
  • Noise pollution from an increase in boat traffic
  • Moved on to a safer location
  • Overfishing
  • Contaminates entering the water – sunblock, shampoo, perfume and urine
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Fu (wheat gluten)

In the past, guides would feed the fish sausage and bread. In recent years many local companies switched over to Fu (wheat gluten). It’s much cheeper than fish sausage.  Kilos of Fu enter the water for fish consumption on a given week at Maeda point. Could this gluten based product be good for the fish? Why you should not feed wild animals:
  • Interfere’s with their natural diet and feeding cycle
  • Makes the fish more vulnarable to predators
  • Reef algae overgrowth due to the fish being full
  • Increase’s your chance of getting bitten
Sometimes, I see plastic bags filled will remnants of fish food floating on the surface of the water. With the increase in tourism, I am finding more trash left behind at Maeda Point. This is a photograph I took recently at Maeda point. A collector urchin (Tripneustes gratilla) is covering up with discarded sausage wrapper.  
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collector urchin

This is one of my favorite photographs taken at Maeda Point.
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Beautiful bat-fish

Hopefully the teira batfish populations are not a blur left behind.
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Fading away

My Mission: To Protect and Preserve the Wildlife of the Ryukyu Islands for Future Generations

If you would like to help me make a difference Please check out my Patreon Site https://www.patreon.com/MakeTheSwitch4Nature

Your donations will help conservation initiatives as well as bring solutions to the worldwide pollution issues on our beautiful shorelines.  Thank you for your support, Shawn M Miller.

#MakeTheSwitch4Nature

Cryptic fish, Comets and Stars by Shawn Miller

The Comet (Calloplesiops altivelis) is a type of marine betta found in the beautiful waters of Okinawa. They hide in caves during the day. At night they come out to feed on small crustaceans. They are a mysterious fish and can be challenging to photograph. Comets are uncommon, yet very little is know about the behavior of these cryptic animals.

  • Scientific name:  Calloplesiops altivelis
  • Common Name: Comet (Marine betta)
  • Distribution:  Ryukyu Islands
  • Habitat: submarine caves
  • Diet:  crustaceans and fish
  • Average Size:  20cm 

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Calloplesiops altivelis © Shawn Miller

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Calloplesiops altivelis © Shawn Miller

Look close, can see the resemblance between the comet and the spotted moray eel?

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Gymnothorax meleagris © Shawn Miller

When threatened the comet will stick its head into a hole and expose its tail end, which mimics the head of the a dangerous moray eel.  The caudal fin also has detailed white lines that resemble the razor sharp teeth. 

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Calloplesiops altivelis © Shawn Miller

Having trouble getting close to marine life during your night dives? I recommend using the Light & Motion Sola 1200 red light feature. This feature enables the user to photograph marine life during the night without disturbing them. Most marine animals do not see the color red or react less to the red light.

Underwater setup with sola 600

Underwater setup with sola 600

 

 My Mission: To Document and Preserve the Wildlife of the Ryukyu Islands

This site is also designed to help people identify the beautiful animals of Okinawa, basically  to serve as an online nature reference guide. If you would like to make a contribution to support my mission, please click on the donation link  paypal.me/maketheswitch4nature

Your donations will help worldwide conservation initiatives as well as bring solutions to the worldwide pollution issues on our beautiful shorelines.  Thank you for your support.  Shawn M Miller.

 

The Eyes of the Underwater World by Shawn Miller

Okinawa offers some of the best Scuba-diving in the world. I really enjoy the art of underwater macro photography.  Macro subjects can always be found, it just takes some imagination and good framing to create beautiful underwater abstracts. Animal eyes are challenging and exciting areas to focus on. Below are some of my favorite photographs of vision taken on the Island of Okinawa.

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Longsnout flathead © Shawn Miller

 

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Crowned puffer © Shawn Miller

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Leopard flounder © Shawn Miller

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Reef squid © Shawn Miller

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© Shawn Miller

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Coral scallop © Shawn Miller

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Crowned puffer-fish © Shawn Miller

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Pufferfish © Shawn Miller

Hawk fish © Shawn Miller

Hawk fish © Shawn Miller

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Stareye parrotfish © Shawn Miller

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Broadband cuttlefish © Shawn Miller

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Crowned puffer © Shawn Miller

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Fire fish © Shawn Miller

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Hawkfish © Shawn Miller

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Parasitic Isopods of the Ryukyu Islands

Scorpionfish, lionfish and stonefish all belong to the family Scorpaenidae. They all are well camouflaged and highly venomous. Their defensive spines can deliver a painful sting. It’s best to wear exposure protection and maintain good bouncy control to avoid getting envenomated by these ambush predators.

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In the 1980’s Robert Bolland stumbled upon an interesting underwater find. He found a tiny undescribed isopod hitching a ride on a scorpionfish. 1984 the parasitic isopod Renocila bollandi from Okinawa was named after him.

Renocila bollandi from

Over the years I photographed a dozen of these orange Isopods (Renocilla bollandi)

I have always wondered,

  • What is the relationship between the two?
  • Is the relationship mutualism, commensalism, and parasitism?
  • Why does the isopod only prefer venomous fish (scorpionfish) as its host?
  • Why does the isopod always stay close to the eye?

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Scorpionfish Okinawa

Scorpaenopsis diabolus scorpionfish

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See why they call it the bearded scorpionfish (Scorpaenopsis cirrhosa).

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Learn more about the hazardous marine life of Okinawa.

Learn more about Robert Bolland and his research at The Okinawa Slug Site.

 My Mission: To Document and Preserve the Wildlife of the Ryukyu Islands

This site is also designed to help people identify the beautiful animals of Okinawa, basically to serve as an online nature reference guide. If you would like to make a contribution to support my mission, please click on the donation link  paypal.me/maketheswitch4nature

Your donations will help conservation initiatives as well as bring solutions to the worldwide pollution issues on our beautiful shorelines.  Thank you for your support, Shawn M Miller.

#MakeTheSwitch4Nature

Get Fa-Millerized with the Nature of the Ryukyu Islands  – – – –  SUBSCRIBE BELOW