WHAT ARE GOOD SALTWATER FISH FOR BEGINNERS
The term “compatibility” is used to describe how well any given species of fish gets along with other species in a community setting. In regard to saltwater fish you need to think about whether the fish will prey on other fish in the tank (particularly smaller fish) and whether it is likely to act aggressive. Many fish that quality as “community” fish can be aggressive when not given adequate space, and two males of the same species will often fight with each other. The key is to choose a species in which neither of these issues is very significant.
In general, saltwater fish are more sensitive to tank fluctuations than freshwater fish. That's because, in nature, freshwater fish are more used to changing conditions in their water than saltwater fish would ever have to be. Compared to saltwater fish in the ocean, freshwater fish are used to smaller water volumes that have greater fluctuations in quality and temperature. That said, there are some saltwater fish that are a little more adaptable than others. Hardiness and adaptability are important qualities to have in a species of fish for beginners because you are likely to make a few mistakes when you are first starting out and it is a good idea to give yourself a little wiggle room.
Though saltwater aquarium fish tend to require more food than freshwater fish to sustain their bodies, that is not the real issue. The real issue with saltwater fish is that they are more likely than freshwater fish to be picky eaters. Many saltwater fish are still live caught which means that they aren’t used to eating frozen or freeze-dried food. If the fish requires live food or some kind of food that isn’t readily available, it may not be a good choice for a beginner.
Generally, saltwater fish are more expensive than freshwater fish and some saltwater fish are just going to be more expensive than others. For example, using prices off of LiveAquaria.com (Doctors Smith and Foster's live fish site), we can compare the following prices for saltwater fish (for comparison purposes, let's stick with fish that would grow to a maximum size of 2-3" in the tank):
|Type of Fish||Price|
|Brown Clown Goby||$8.99|
|True Percula Clownfish||$14.99|
|Neon Blue Goby||$18.99|
|Firefish, Helfrichi||$159.99 (and that's on sale!)|
|Type of Fish||Price|
|Hamlet - Golden (2-3 inches)||$49.99|
|Hamlet - Indigo (2-3 inches)||$19.99|
The beauty of starting an aquarium is that you can choose any size you want – you do, however, have to consider the fact that the size of your tank will determine the size and number of fish you can keep. First of all, you need to realize that the size of that cute little juvenile fish that you pick up at the store (1-2 inches in length) may grow up to be one or two feet in length! All fish start out tiny! The adult size correlates directly with your tank size since you must provide enough space for your fish to be comfortable. So with our beginner list, we start out with fish that shouldn't outgrow your tank overnight.
Space requirements are tied closely to the fish's final adult size but you also need to take into account the fish's normal behavior. Marine fish, as a whole, require more breathing room than their freshwater companions. Within the marine world, you have rolling stones and fish that pretty much stay put (fish that are comfortable in small areas, anyway). With that in mind, our list of starter fish only includes fish that would be comfortable in a smaller tank to begin with.
Clownfish in the Andaman Coral Reef by Ritiks via Wikimedia Commons
- Clownfish are from the same family as damselfish and enjoy basically the same ease of care as damselfish. Clownfish can be aggressive towards other fish in the tank, particularly tomato clownfish. Price range is $7.99 to $34.99.
- Blennies need plenty of hiding places but in return will demonstrate easy appetites (they'll eat just about anything you drop in the tank for them). Price range is $10.99 to $32.99
- Crabs are a great invertebrate choice for a beginner's saltwater tank. Choices include hermit crabs, arrow crabs, and porcelain crabs. Price range is $0.99 to $23.99.
- Damselfish are great for beginners because they're small (for the most part under 3" in tanks although some species will get up to 8"), cheap, and hardy. Couple that with the fact that they come in vibrant, electric blue and striped colors. Damselfish sure don't act like "damsels in distress;" they can be aggressive towards other fish in the tank. Price range is $3.99 to $18.99.
- Gobies are relatively small (usually staying under 3" in tanks). Price range is $6.99 to $29.99. (We're not including the extremely rare Griessingei Gobi which will cost you $149.99 to own.)
- Shrimp demonstrate interesting behavior in the tank. For example, cleaner shrimp eat potential parasites off of fish - it's neat to watch fish and shrimp interact. They are relatively hardy but you'll need to watch copper and nitrate levels. Price range is $4.99 to $39.99.
- Wrasses are usually categorized as reef-safe or for fish-only tanks. These beautiful fish showcase sherbet colorations not seen in many of the other fish species. Wrasses are larger than other fish in our list and prefer live food. Price range is $10.99 to $119.99.
Briefly, here's a list of fish that you shouldn't pick the first time you start up a Marine tank (and why):
Black Sea Fauna Sea Horse by Florin Dumitrescu via Wikimedia Commons
- Seahorses are picky, picky eaters. They often won't eat anything other than live food (brine shrimp and fish fry). They also need a very quiet environment.
- Jellyfish require multiple feedings daily, for starters. Besides that, the more serious issue is keeping them safely enclosed without turning their extremely delicate gelatinous bodies into "chopped liver." You could buy specialized (i.e. expensive) tanks but don't a couple of sea urchins or starfish sound good instead?
- Octopus. Just because you can find these for sale doesn't mean you should buy them. There's a reason why most people only see these creatures at the zoo.
- Sharks and Rays are the perfect backdrop for a James Bond movie but exceptionally difficult to keep in a house setting due to the sheer tank size you'd be dealing with. Unless you can devote your entire basement to keeping your new prize beauties, keep away.
- Scorpionfish and Toad Fish. Exotic looking? Yes. Hardy? Sure. Easy to handle? Of course not! Those dorsal-fin spines are packed to gills (so to speak) with very painful neurotoxins. They are also avid predators and will not play nice with tank mates, eating most anything that can fit in its mouth.
- Clams require specific lighting requirements and often do not do well with as much water movement as the rest of your reef tank may require.
- Eels need much space and plenty of food.
- Angelfish might be a surprise to you since they appear ubiquitous in the marine tank. But for the beginner, angelfish are problematic because they can grow to be quite large and are usually very aggressive towards other fish in the tank.
- Pipefish are similar to Seahorses; they've simply been "unbent" through evolution. The same feeding and care issues come into play with pipefish.
How to Choose Saltwater Fish