Saltwater Aquarium Inverts for Marine Reef Aquariums: Octopus, Caribbean
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Picture of a Caribbean Octopus
Caribbean Octopus, Octopus briareus


Octopus are both a fascinating and rewarding marine species you can keep in the home saltwater aquarium. Saltwater aquarium's are the perfect place to observe Octopus with their own personalities, their ability to learn, their ability to interact with us, and finally their super fast color-changing abilities. If you're willing to put time and effort into the saltwater a1quarium hobby, and you can afford shrimp and crab for food then an octopus for your saltwater aquarium may be for you. Octopus have several tricks for blending in with their undersea surroundings: they can change color, pattern and even the shape of their skin. They need to be housed alone without any other marine species because eventually they will devour their tank mates.

Octopus are highly intelligent, by far the most intelligent known invertebrates, and are able to learn how to distinguish the difference between colors and shapes. More impressive is that they can remember the shapes and colors and their meanings for many years. An octopus can also learn how to unscrew the lid of a jar with its arms, and an octopus called Einstein at the British Blue Reef Aquarium could open a tin within seconds with two arms, opening it even faster if it was filled with food. Octopus have the ability to camouflage their body color depending on their environment and mood. They can orchestrate their pliable body's to fit into any small area.

Why Keep an Octopus?
Keeping an octopus enables you to experience one of the most intelligent animals in the sea, one that is interesting to observe and offers the possibility of interaction. Keeping an octopus tank is much different from keeping a reef tank, which is fascinating in its own right. Many people are intrigued by these animals and want to know more about them. We have found that by introducing others to an octopus tank we are promoting an appreciation of intelligent marine life, which might lead to more care and concern about all sea life.

Tank Requirements:
Octopus can be kept in a 50- to 75-gallon tank (or even larger) with the water at about 78 degrees F. You must have live rock in the tank (a pound per gallon), a one to two inch sand bed, a wet-dry sump filter, a protein skimmer, a small powerhead for extra circulation, and a simple fluorescent light (not to much light). Make sure no copper has ever been used as a treatment in the tank or rock, copper is deadly to an octopus. Also, the tank must be very well cycled. Because of their sensitivity to ammonia and nitrites, your octopus must be put in a well-cycled tank. If you are starting from scratch it takes between two and three months. The water -you use is very important with an octopus aquarium. Make sure you always are using RO/DI water, available at your local LFS or `it's best to purchase your own RO/DI unit. They are easily set up and easy to maintain. Don't skimp on your salt mix. Get a good quality salt mix, such as SeaChem or Fritz. Octopus are especially sensitive to pH and ammonia. Water parameters should be: specific gravity about 1.026, pH around 8.2, ammonia 0. Some nitrates can be tolerated, try to not overfeed as this and water changes need to keep the Nitrate level at less than 30 ppm.

Regardless of what you might read, octopus will try to escape. Make sure the lid on your tank is well sealed (duct tape is your best friend). Also, intakes and outlets within the tank should be protected with a sponge or mesh secured by rubber bands or cable ties. Rocks in the tank must be very stable. With its great strength, even a small octopus can topple your rock structure. Nothing is sacred within your tank. Be prepared for your octopus to romp around the tank, rearrange rocks and shells, dig through the sand down to the glass, and generally change the overall setup. They do this for fun and curiousity. The older they get the smarter they become.

Diet and Feeding: The Caribbean Octopus can be fed live Feeder Shrimp, Mussels, Crustacean Flesh, and small Feeder Fish. Any live foods should be fed spirulina based dry foods, plankton, and cyclops to enhance their nutritional value.

Reef Compatibility: No

Approximate Purchase Size: Head size about 1"- 1-1/2" Adjustment Time: It's important to acclimate your new octopus upon its arrival, and this should be done slowly, using a drip line. Since Octopus are so very sensitive to changes in water chemistry, salinity, and temperature they need a VERY slow three to four hour acclamation.

Level of Care: Advanced or Expert Aquarist Only Not Guaranteed Beyond Live Arrival

Caribbean Octopus, Octopus briareus $94.99 each

We guarantee that ALL aquariam species offered will arrive alive and in good condition. However, because of the increased level of care required for this particular species, it has been designated as "Advanced Aquarist Species," and we cannot guarantee it after arrival.

Copyright 2020 Aquarium Creations Online. While Aquarium Creations does its best to make an accurate representation of marine life on our website there is no guarantee that the actual marine life delivered will match the colors seen on your computer. Often the color reproduction on a computer screen or mobil device may not be produce the correct colors.