Dwarf Parrot Wrasse (Cirrhilabrus rubriventralis) Family: Labridae
 
If I was asked to name one group of fish which featured a wealth of attributes such as beautiful coloration, tireless activity from dawn to dusk, ease of feeding, a generally peaceful nature, compatibility with invertebrates and disease resistance, I would lay odds that the questioner would not be expecting a realistic reply.
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Harlequin Tusk Fish (Choerodon fasciatus) The harlequin tusk (Choerodon fasciatus) belongs to the family of wrasses. It has orange mottled bands. Each band is etched by delicate blue-violet ribbons. Anteriorly, between the orange bands is silvery-white, turning to dark grey-black posteriorly. With big protruding tiger-like fangs, the tusk looks very menacing indeed, capable of doing harm to other tank mates.

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Clown Tang | Acanthurus lineatusThe Clown Tang (Acanthurus lineatus) is one of the most striking members of the Tangs / Surgeons family (Acanthuridae), being one of the most aggressive and can be challenging to keep and care for. It is also known in the trade as the Lined Surgeon and Pyjama Tang.

Sooner or later as a reef tank hobbyist you're going to want one of these beauties. They are reef safe and live harmoniously with corals and invertebrates.

Marine Fish - Tangs & Surgeonfish

Clown Trigger Fish

One type of marine aquarium never fails to create a stir, the fish-only tank containing BIG fish! The sight of large slices of brightly coloured piscine flesh cruising around an equally spacious aquarium is enough to make anyone's heart beat a little quicker. Such displays are normally the province of the public aquarium, but within the confines of a domestic setting the whole thing can be replicated on a somewhat smaller scale with equally stunning results.

General Saltwater - Big Fish & Aquariums

Blood Shrimps (Lysmata debelius) Most of my regular readers will already be aware that, on the whole, I do not condone small marine tanks; that is, tanks with a nett volume of less than 20 gallons (91 litres). They are usually very unstable as far as water parameters are concerned and subsequently exert considerable stress on fish and/or invertebrates. They are also extremely restricting for livestock and consequently prone to overstocking, especially where fish are involved.

Having said that, there is a way that the marine enthusiast can set-up a 'micro' marine aquarium housing only shrimps! Over recent years, I have been experimenting with 3-5 gallon marine aquaria containing various species of tropical and temperate shrimp and crabs. I am pleased to report that all tanks were successful and no livestock was lost.

Marine Invertebrates - Shrimps

Cyphotilapia frontosa A pair of Cyphotilapia frontosa from the authors aquarium.

One of the most beautiful and distinctive Cichlids of Lake Tanganyika has to be C. frontosa. There are two colour morphs of this species, a Berundi morph, which has six vertical bars and a Tanzanian morph, which has seven or even eight bars when they are young, although in my experience I have only ever encountered the Berundi morph. The males develop a huge lump of fat on the top of its head making this a very distinctive occupant to any aquarium.

Freshwater Fish - Cichlids

Random Aquarium Topics

Marine Fish DiseasesCommon Saltwater Fish Diseases
All Tropical Fish
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Untitled Document Common Causes Of Disease The cause of most disease in marine fishes and invertebrates is simply poor environmental factors i.e. poor water quality. On the whole marine fishes are extremely disease resistant, but when things go wrong in a marine system livestock can deteriorate rapidly.


PlenumsFreshwater Plenums
Steve Windsor

At PFK we've been tossing around the idea of a freshwater plenum tank - that is a set-up relying on the "plenum" - a gap under a substrate - to filter the tank. In the marine world these are generally (though not always) combined with "living" sand - a substrate turned over by the living creatures in it - and usually (but again not always) a protein skimmer which removes a lot of the wastes before they can pollute the tank.


Marine PestsGiant Elephant Ear Polyps - Rhodactis
Nick Dakin
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These sedentary creatures are often regarded as beautiful and desirable invertebrates for the reef aquarium; but beware, there can be a high price to pay! Large polyps of this nature are highly predatory on fish and crustacea.


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