1 syllable:
bisch, bish, blish, brish, crish, disch, dish, drish, fisch, fish, frisch, frische, gish, glish, guiche, isch, ish, kisch, kish, klish, knish, krisch, lish, misch, mish, phish, risch, rish, shish, slish, squish, swish, tisch, tish, trish, whish, wisch, wish, wishe, wisz, yeshe

2 syllables:
achish, affiche, alms dish, assish, badisch, baitfish, barfish, basisch, batfish, beardfish, billfish, blackfish, bladefish, blindfish, blobfish, bluefish, boarfish, bonefish, boxfish, bugfish, burrfish, cavefish, chemisch, chenfish, clingfish, clownfish, coal-fish, coalfish, cod-fish, codfish, cold fish, commish, conchfish, crampfish, crapefish, crawfish, creekfish, crossfish, dalgleish, dealfish, delish, demisch, dogfish, driftfish, drumfish, dunfish, episch, fallfish, filefish, finfish, flamefish, flat-fish, flatfish, fly-fish, flyfish, food fish, foolfish, foxfish, fresh fish, frogfish, frostfish, frost fish, gamefish, game fish, garfish, ghostfish, gibfish, glassfish, globefish, glofish, goatfish, goldfish, goosefish, go fish, greenfish, ground-fish, groundfish, guardfish, half-fish, handfish, hawkfish, headfish, hektisch, henfish, hogfish, hornfish, horsefish, houndfish, icefish, inkfish, irisch, jackfish, jagdish, jawfish, jewfish, kelpfish, kingfish, klipfish, komisch, ladish, latish, logisch, lumpfish, lungfish, magisch, mcclish, mclish, mcnish, milkfish, monkfish, moonfish, mousefish, mudfish, nephish, netfish, net fish, numbfish, nymphish, oafish, oarfish, odd fish, offish, oilfish, omish, pearl-fish, pearlfish, penfish, pigfish, pipefish, pondfish, poor fish, pork-fish, porkfish, praktisch, prowfish, pupfish, queenfish, ratfish, redfish, rockfish, rosefish, rough fish, roundfish, sailfish, saltfish, sandfish, sawfish, scaldfish, schreibtisch, scum's wish, seerfish, seirfish, shanklish, sheatfish, sheathfish, shellfish, shrimp-fish, shrimpfish, side dish, skullfish, sleevefish, snailfish, snake-fish, snakefish, snapfish, snipefish, soapfish, soap dish, spadefish, spearfish, spikefish, spoutfish, squawfish, stammtisch, starfish, still-fish, stingfish, stockfisch, stockfish, stonefish, studfish, suckfish, sunfish, surffish, surf fish, swellfish, swinefish, sword-fish, swordfish, tangfish, thing-fish, thread-fish, threadfish, thunfisch, tierisch, tilefish, toadfish, tongue-fish, tonguefish, trunkfish, tubfish, twofish, unwish, waifish, wallfish, weakfish, well-wish, wheyish, whitefish, wingfish, witfish, wolffish, wolfish, wolf fish, wormfish, wreckfish, young fish

3 syllables:
akustisch, allergisch, amberfish, angel-fish, angelfish, anglerfish, angler fish, archerfish, australisch, balloonfish, barbarisch, barrelfish, basket fish, battlefish, bellows fish, bishop-fish, bony fish, bottomfish, bottom fish, butterfish, butter dish, candlefish, chafing dish, chucklefish, cigarfish, convictfish, cornetfish, creole-fish, cuddlefish, cutlassfish, cuttlefish, damselfish, dandyish, devil-fish, devilfish, doctor-fish, doctorfish, dogmatisch, dollarfish, dolphinfish, dragonfish, dramatisch, dwarf pipefish, einheimisch, elastisch, elektrisch, endemisch, firefish, flashlight fish, flying-fish, flying fish, footballfish, frankenfish, guitarfish, handsaw fish, harvestfish, hatchetfish, icejjfish, interwish, jackknife-fish, jellyfish, jewelfish, ladyfish, lake whitefish, lancetfish, lancet fish, lanternfish, leatherfish, lemonfish, lionfish, lizardfish, make-a-wish, moralisch, muttonfish, narzisstisch, needlefish, overfish, oyster-fish, oysterfish, oyster fish, paddlefish, parrotfish, petri dish, pilotfish, platyfish, politisch, pollyfish, pragmatisch, pricklefish, pufferfish, quadratisch, rabbitfish, rainbowfish, rainbow fish, razor-fish, razorfish, ribbonfish, rock sunfish, roosterfish, round whitefish, rudderfish, sablefish, scabbardfish, sea crawfish, sergeant fish, serving dish, silverfish, skilletfish, smooth dogfish, snobistisch, soldier-fish, soldierfish, spezifisch, squirrelfish, standoffish, sturddlefish, suckerfish, sucking fish, superfish, surgeonfish, swallowfish, tanglefish, tartuffish, tartufish, thunderfish, tigerfish, tintenfisch, tokenish, tokhtamysh, tovarisch, triggerfish, trumpetfish, tuna fish, ungarisch, vegetarisch, viperfish, weaverfish, whistlefish, yellowfish, yokelish

4 syllables:
achromatisch, akademisch, allegorisch, anekdotisch, anemone fish, annabeth gish, aromatisch, automatisch, banana fish, biologisch, buffalofish, buffalo fish, butterflyfish, butterfly fish, cardinalfish, charakteristisch, crucifix fish, filet-o-fish, freshwater fish, kettle of fish, mosquitofish, ocean sunfish, plentyoffish, porcupinefish, porcupine fish, saltwater fish, scorpionfish, scorpion fish, spiny dogfish, spotted sunfish, telescopefish, theoretisch

5 syllables:
alligatorfish, atlantic sailfish, biplane flying fish, clown anemone fish, deepwater pipefish

6 syllables:
european flatfish, monoplane flying fish, rocky mountain whitefish

7 syllables:
american smooth dogfish, atlantic spiny dogfish, pacific spiny dogfish

2 syllables:
hagfish, bakshish, flagfish