Pacific bluestripe pipefish
Doryrhamphus melanopleura
Pacific bluestripe pipefish exhibits a slender body with distinct blue stripes along its elongated form, often blending seamlessly with coral environments.
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About the Pacific bluestripe pipefish
This is one of the little flagtail pipefish with the long snout and that flashy tail fan with orange spots. In a calm reef tank it tends to hover around rock crevices and pick at tiny prey all day, so it is a super cool fish to watch - but it really needs gentle tankmates and frequent small meaty foods.
Also known as
Quick Facts
Size
3 inches
Temperament
Peaceful
Difficulty
Advanced
Min Tank Size
30 gallons
Lifespan
3-5 years
Origin
Indo-Pacific
Diet
Carnivore - copepods and other tiny crustaceans; can be trained onto frozen mysis/brine with patience
Water Parameters
22-26°C
8.1-8.4
8-12 dGH
Need a heater for this species?
This species needs 22-26°C in a 30 gallon tank. Use our heater calculator to find the right wattage.
Calculate heater sizeCare Notes
- Give them a mature, pod-rich tank (think 30+ gallons) with lots of branching rock, gorgs, or macro to perch around, and keep flow moderate so they are not getting blasted while hunting.
- They crash fast in dirty or swingy water - keep temp around 75-78F, salinity 1.024-1.026, pH 8.1-8.4, ammonia/nitrite 0, nitrate ideally under ~10 ppm (lower is better).
- Feeding is the whole game: plan on small foods several times a day - live copepods, enriched baby brine, and small mysis (PE mysis is usually too big) work best.
- If it is new or skinny, start with live foods and a pod pile, then slowly mix in frozen; target feed with a turkey baster near their perch so faster fish do not steal everything.
- Tankmates need to be calm and not greedy - avoid wrasses, dottybacks, damsels, hawkfish, and most clowns that will outcompete or bully them; they do well with seahorses-style peaceful fish, tiny gobies, and mellow inverts.
- Skip stinging or grabby stuff where they like to hang out: aggressive LPS sweeper tentacles, anemones, and big crabs are accidents waiting to happen.
- Watch for snout damage and starvation (pinched belly, faded color, hovering and not hunting); they also hate high heat and low oxygen, so run good surface agitation and keep the tank from creeping above 80F.
- Breeding is cool: males carry the eggs, and pairs will do a little dance; if you want any chance with babies, you will need a separate rearing setup and tiny live foods (rotifers/copepod nauplii) from day one.
Compatibility
Good Tankmates
- Other gentle pipefish or small seahorses (kept with care) - they are all slow, polite eaters, so it can work if you make sure everyone is actually getting food (lots of small frozen/copepods, target feeding helps).
- Small, chill gobies like clown gobies, neon gobies, or watchman-type gobies - they mostly mind their own business and do not hassle pipefish.
- Peaceful blennies like tailspot blennies - generally good as long as the blenny is not a jerk and the tank is not tiny.
- Firefish (dartfish) - calm, hover-y fish that do not compete too hard at feeding time if you are on top of it.
- Small, non-aggressive reef-safe cardinals (like Banggai or pajama cardinals) - usually fine, just watch that the cardinals are not hoovering all the food before the pipefish even notices it.
- Tiny, mellow wrasses like possum wrasses - can work if they are not food bullies and the tank has tons of pods. Some wrasses are too fast, so pick the slow, shy types.
Avoid
- Dottybacks and most damsels - they are pushy, territorial, and love to chase slow fish. Pipefish do not do well with that kind of nonstop attitude.
- Hawkfish (like flame or longnose) - they perch and pounce, and pipefish look like an easy snack or a target to harass.
- Fast, aggressive feeders like most anthias or big, boisterous wrasses - even if they do not attack, they will outcompete the pipefish and the pipe slowly wastes away.
- Nippy stuff like large clownfish pairs, triggers, puffers, or any kind of predator - pipefish are basically a living spaghetti noodle to these guys.
Where they come from
Pacific bluestripe pipefish (Doryrhamphus melanopleura) show up around shallow Indo-Pacific reefs, often hanging around surge zones, rubble, and coral heads where little planktonic snacks blow by. In the wild you will usually see them as a pair, cruising and picking at tiny prey all day.
They are gorgeous and full of personality, but they are not a beginner pipefish. The trick is feeding and keeping stress low. If you nail those two things, they can be really rewarding.
Setting up their tank
Think of them like a picky, delicate planktivore that likes to hover in the water column and make lots of little feeding passes. I have had the best luck in mature, stable reef tanks where pods are already everywhere and the microfauna is established.
- Tank size: 20-30 gallons minimum for a pair, bigger is easier because it dilutes mistakes
- Tank age: mature (3-6+ months) is your friend
- Flow: moderate, with some calmer eddies where they can rest and feed
- Aquascape: branching rock/coral structure to weave through, plus a couple of sheltered areas
- Filtration: strong but not pipefish-hostile (cover intakes, use sponge guards)
Skip aggressive surface skimmers and uncovered overflows unless you can pipefish-proof them. These guys explore, and a pipefish in an overflow is a bad day.
I like to give them a few "stations" where food tends to collect: behind a rock, along a gentle gyre, or near a return that makes a slow carousel. They learn where food shows up and will work those spots.
If you can, run a refugium or at least a pod hotel. Even if they take frozen, the constant background of copepods takes pressure off you and helps them keep weight on.
What to feed them
Feeding is the whole game with Doryrhamphus. They have tiny mouths and they are built to sip micro prey all day, not to gorge once. Expect multiple small feedings and plan your fish list around that.
- Best starters: live copepods, live baby brine (enriched), live mysis for larger individuals (often too big for many)
- Frozen that sometimes works: Cyclops, calanus, small mysis, finely chopped mysis, roe-style micro foods
- Pod support: Tisbe and Tigriopus in the tank, plus periodic pod additions if your system is new
I have gotten some to take frozen, but it is rarely instant. The ones that transition usually do it because they already recognize food drifting in the water column. Target feeding with a pipette or turkey baster helps, but you have to be gentle - blasting them with a jet just spooks them.
Try a "food cloud" approach: thaw, rinse, then release small amounts up-current so it drifts past them naturally. I feed 2-4 times a day instead of one big dump.
Do not buy one that is already thin with a pinched belly or visible spine. Pipefish can look fine right up until they crash, and recovering a starved one is brutally hard.
How they behave and who they get along with
They are peaceful, curious, and kind of hilarious to watch - lots of hovering, quick little darts, and "inspection" laps around the rockwork. Most of the time they ignore other fish, but they do not handle being outcompeted at feeding time.
- Good tankmates: small, calm fish that are not food bulldozers (small gobies, firefish, calm blennies), peaceful inverts
- Avoid: aggressive fish, fast eaters (many wrasses, damsels), big dottybacks, hawkfish, anything that harasses or steals every bite
- Also avoid: anemones and stinging traps in tight spaces where a pipefish might blunder into tentacles
Pairs are common and generally the way to go if you have the space and food supply. Two males can bicker, and mixing pipefish species in a small tank can turn into a feeding competition you did not sign up for.
They are closely related to seahorses, and they share some of the same problems: sensitive to stress, vulnerable to fast parasites, and not built for chaotic community feeding.
Breeding tips
Yes, they can breed in captivity, and it is very cool. The male carries the eggs (brood area under the tail region), and once a pair settles in you may notice courtship swimming and the male looking "loaded" for a while.
- Conditioning: heavy micro-food feeding plus lots of pods in the system
- Peace and routine: stable tank, minimal chasing tankmates, predictable feeding spots
- Fry reality: raising babies is a separate project - they need tiny live foods (rotifers/copepod nauplii) and a dedicated rearing setup
Most people lose fry in a display tank to filtration, overflows, and hungry tankmates. If you want to try raising them, plan a small rearing tank ahead of time.
Common problems to watch for
Most issues boil down to one of three things: not eating enough, getting bullied, or getting hit by disease because they are stressed. If you watch their body shape and their feeding response, they will usually tell on themselves early.
- Slow starvation: belly pinches in, they lose that smooth "full" look, they stop hunting constantly
- Outcompeted at meals: they hang back while other fish mob the food
- Bacterial issues: tail or snout lesions, red patches, fraying
- External parasites: rapid breathing, flashing, sudden decline (pipefish can go downhill fast)
- Mechanical injuries: sucked to an intake, stuck in overflow, burned by stings
Get in the habit of a 30-second daily check: are they actively hunting, are both eyes clear, is the snout intact, and is the belly still rounded? Catching problems early is the difference between an easy fix and a loss.
Be careful with meds. Pipefish can be sensitive, and many reef meds are not invert-safe anyway. Quarantine and observation are your best tools, but keep the QT calm and make sure you can actually feed them in it.
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