Section 6: Live Stock
mixed reef image via reef2reef member reefmp
A few holidays have passed, you have gone through a few types of hairstyles, and the seasons have changed dramatically. Your aquarium has gone from an idea in your head to a flowing ecosystem of algae and rock. You need to get some critters in there! But where do you begin? There are more bad combinations of marine animals than flavors of ice cream. Luckily, there are Compatibility charts that do the vague guessing for you. Locate these charts to help you get a picture of what does and does not mix. Some fish are obvious. Mixing a shark and a seahorse are not a good idea. When you get into the fish of the reef there are some unexpected no-no’s. A huge tang could fall victim to even a small blenny bullying or nipping at him. Stocking will be more research than anything. It is improbable the part time employee at your LFS has a mental encyclopedia of everything they sell. Always check for yourself anyways. If you plan on having predator fish you can skip the clean up crew and corals since they will either get eaten or destroyed. Every animal you buy WILL NEED QUARANTINED.
Quarantine and Acclimation:
image via Advanced Aquarist
Quarantine tanks can be as simple as a bucket or you can setup a larger system if you plan to have larger fish. All the tank needs is flow, observation worthy light, and some hiding spots. You will want to use proven methods and avoid the herbal approaches like garlic.
Invertebrates (excluding corals) cannot be medicated. The can be carriers of parasites like ich that feed off fish. To prevent Ich from being transferred into your tank they will need to reside in a tank by themselves for 8 weeks. Keep the water aerated, give them some food now and then, and do periodic water changed to keep it fresh. It takes 8 weeks to starve the parasite. After that time period you can acclimate them into the aquarium.
Fish almost always have to be treated. Ich is present in most systems that deal with selling livestock. It is more cost efficient for them to leave the medicating up to you. There are a few trusted techniques for quarantine. Hyposalinity and copper treatment are the two most sure ways to kill anything that is not a fish.
Corals have their own predators as well. The first thing a lot of people do is dip their corals in a Lugol’s Solution, or Iodine. This disinfects them and often kills or irritates anything on them enough to jump off. Keeping them in quarantine until you are sure you rid any pests is very important or you risk growing these predators in your main system. Aptasia are another common hitch hiker. These can be injected with hot vinegar or lemon juice. What ever the problem, there is a solution. This is where your photography skills will first come into play when you are trying to identify problems. There are many methods of quarantine. Research the techniques and find one that is right for you. There will never be a perfect method for all. Ask your reef buddies how they approach certain problems. If you skip quarantine you may one day have to remove every animal in your tank later.
Acclimating livestock varies in time, but is the same as far as methods. It come in handy to have a large jar so you can view your animal. Simply siphon water from your display tank into the jar. You want to have an air valve or a knot so that the water drips into the container. To determine the acclimation time for your animal you can just look it up online, which you should know before purchasing.
CHOICE GUIDE:
Clean-up Crew:
hermit crab image via reef2reef member Rickyrooz
These guys do all the dirty work. They eat algae, detritus, dead animals, and whatever else makes its way into their grasp. Crabs, stars, snails, conchs, nudibranch, urchins, cowries, pods, and worms are only a small number of the available types of animals you can find. A variety of them is always best since they are each designed for their own reasons. Every breed of invertebrate has its exceptions. There are starfish that eat other animals you may want to keep. Some crabs grow into coral eating monsters. Some urchins can grow as large as soccer balls.
Snails are easy to pick. They rarely sell dangerous snails. Turbo, astrea, nerite, and cortez snails are good beginner species. I add one of each and observe them. Which species cleans the most, the fastest, or gets the hidden areas the best? Judge what areas need more attention and stock more snails that work that area well. Snails will clean parts of the glass, but you will always need to manually clean it. Do not rely on them for a clean window.
Hermits are not completely necessary, and can be known to steal a snails shell here and there. They are amazing creatures that work their claw off at all times. Some grow huge, but some stay small. Blue and red legged hermits are the lesser aggressive species that stays small.
Serpent stars and Brittle stars are good for a reef tank. They will be unseen for days until you feed and they come running on all fives, immediately cleaning the sand bed. They are quite impressive to watch scurry about. Sand sifters are good if you are not relying on a live sand bed. They stir the sand, but they eat all the good critters that live there. Urchins can be good, but they are very closely related to starfish and can also be predatory. Research the urchin you are looking at buying, it may be a crab hunter.
For more advanced inverts like shrimp and nudibranch it is best to learn about the species. Every nudibranch eats something different. Some can even eat coral. There is a ton of information out there and if you find an animal with no helpful info it is best to avoid it all together.
Fish:
Desjardini tang image via reef2reef member mike&terry
There are a ton of fish out there. Some are cheap and some cost more than the tank they will live in. There is no better way to come up with a stock list than going out and looking at the fish in person. Write a list of all that interest you and look them up. Do they seem like they are the right size? Are they compatible with each other? With Inverts? With Corals? Do tons of research. This is your first tank. You can go for the advanced creatures on your next round. Starting with peaceful hardy fish makes life a lot easier. Fish are not required, there are beautiful tanks with no fish.
A good way to organize your wish list is take a note of all the fish that tickle your fancy and then go home and investigate. Sometimes it is just easier to post your list online and take peoples input. People are dying to prevent you from making mistakes. Please let them help you. If you ask a question that has been answered they will point you the right way to get your reef in order. There are too many varieties to have a perfect formula. The animals diet is the single most important thing to consider. Some fish love corals, others love ornamental shrimp. Learn not only what the species does in the aquarium, but in the wild as well. They may spend their lives hunting animals you may want to mix with them.
Good Luck
